Much of the discourse around artificial intelligence (AI) focuses on grand ideas such as the rise of a hypothetical artificial general intelligence (AGI) and superintelligence. Speculation swirls around the likelihood that the technology will thin out the job market, or even precipitate the death or evolution of human creativity. We haven't focused as much on the multitude of subtle yet hugely consequential ways in which AI is reshaping the social fabric of our society, and how we collectively imagine the future.

That's the argument sociologist and AI researcher Mona Sloane, an assistant professor of data science and media studies at the University of Virginia, puts at the center of her new book, "Predicted: How AI Is Restructuring Social Life" (University of California Press, 2026). Whether we consider email filtering, prediction markets or social media platforms, AI systems are embedded in the heart of how we interact with the digital world. Indeed, AI is so ubiquitously integrated into everyday interfaces that it's given rise to a new kind of "prediction logic" that makes assumptions about who we are and how we are likely to behave.

In this excerpt, Sloane compares the AI technology we use today with the oracles of ancient Greece, framing it as an omnipotent presence that has moved to organize society through the prism of prediction models. This in turn affects how we learn, live, love and even picture the future.

We live in a world of oracles. These oracles constantly feed us predictions that shape our social lives — how we socialize, love, work, gain access to resources. Like in ancient Greece, predictions occupy a prominent role in our society. We consider our oracles so mighty that their predictive power rules over the fate of whole economies and even geopolitical constellations. Where the oracle is, there is the center of the world.

But unlike in ancient Greece, our oracles aren't high priestesses delivering divine prophecies. They are artificial intelligence (AI) systems melted into the infrastructure of everyday life. Today, it is nearly impossible to evade the grasp of AI predictions. I voluntarily and involuntarily use AI on a constant basis: by using email providers that build on the predictive properties of AI for spam filters, by conducting online banking and getting enrolled into AI-automated fraud detection, or by using generative AI for supporting administrative chores. It has become part of how I experience the world.

It can be a relief when it helps me do things I dread or am bad at, such as produce a spreadsheet template I desperately need, help streamline language produced by different authors for a report, or generate a specific image for a presentation. Often, I must intently handhold the AI, checking and fixing its outputs. And sometimes, with deep frustration, I give up and start all over to complete my task manually.

The omnipresence of AI prediction can make it easy to think of these systems as inevitable, quasi-natural phenomena we are subject to, rather than a part of. But they are quantitative concepts that arise from social agreements about how we ought to capture and interpret the world around us.

"Quantitative concepts are not given by nature: they arise from our practice of applying numbers to natural phenomena," wrote Rudolf Carnap, a logician and professor of philosophy of science, in 1966. His point was that numbers can be useful, because they allow for information to travel more easily across contexts, as a sort of language. They also make mathematical predictions possible.

To him, this was first and foremost useful for engineering modern life: A quantitative language allows for the articulation of quantitative laws that, in turn, facilitate the routine generation of mathematicized predictions, particularly in the realm of physics. Being able to predict how energy, compounds, and materials will behave in certain configurations is the reason humans were able to build the conveniences of airplanes, cars, and telephones. For Carnap, predictions were simply instrumental in this way.

Today, almost 60 years later, this pragmatic approach to mathematical prediction has been turned on its head by AI. Prediction is no longer just a handy tool in physics or engineering. The promises of AI's oracular power have turned prediction into a logic for structuring social life. This is a dangerous proposition. It implies that AI is always necessary or even inevitable and diverts attention from the social forces shaping ideas around this technology in the first place.

AI systems are not natural phenomena that happen to us. They are collective expressions of society. As such, they are not just a hype or a deception concocted and executed by global tech elites. They indicate a wider shift in how we imagine and enact society. Many critical discussions of AI characterize this phenomenon chiefly as heightened surveillance and capitalist extraction. But this is a myopic diagnosis. AI's most powerful effect is the subtle yet comprehensive recalibration toward prediction as a guiding principle for organizing society. In this book, I call this phenomenon the prediction paradigm.

AI is something that we do as part of going about our lives and participating in society — it is social infrastructure, affecting how we relate to one another and how we act in public and in private. Like all infrastructures, AI allows resources and ideas to flow in certain directions, but not others. AI uses data from our collective past to predict our individual future. And because AI deals in futures, it solidifies a linear time regime that hardens our social commitment to causality: The past always predicts the future. The problem of AI is not the rise of intelligent machines, but the extraordinary social significance ascribed to this linearity, fetishizing the future and leaving little room for deliberations about what (other) futures may be possible or we may want.

Reprinted from Predicted: How AI Is Restructuring Social LIfe by Mona Sloane, courtesy of the University of California Press. Copyright 2026.

Scientists have discovered the building blocks of life inside a meteorite that smashed through a New Jersey home two years ago. The space rock contains amino acids, carbon compounds and other "prebiotic" molecules similar to what may have helped kick-start life on our planet, a new study shows.

Scientists on the study team — led by Peter Jenniskens, a meteor astronomer with affiliations at the SETI Institute and NASA's Ames Research Center — praised the homeowner in Hillsborough, N.J., for quickly preserving the meteorite after it fell through the roof on July 16, 2024, despite the adverse circumstances. His actions included using disposable gloves and aluminum foil to place pieces of the meteorite fragments into glass jars.

"I was at home at the time, heard a loud crash and found a hole in the ceiling of the master bedroom," the homeowner, who was not named, said in a statement from the SETI Institute. "I smelled a strong, sulfur-like odor and saw many black fragments, along with debris and black dust that covered my bed, carpet and surrounding areas."

Those meteorite pieces were precious, the scientists said, and likely came from an ancient solar system planet that wasn't fully formed. "A forensic study of the fragments revealed that they contained preserved bits from near the surface of a small primitive asteroid where it experienced concentrated salty fluids — a process not previously known from this type of protoplanet world," Jenniskens said in the statement.

The study, published July 15 in the journal Science Advances, also traced how the meteorite got to the house. Earlier on July 16, 2024, at least 60 observers in New York, New Jersey and other Northeastern states spotted a meteor later confirmed to be traveling at 32,000 mph (51,500 km/h). At least 16 people in New York and New Jersey reported feeling the meteor's shock wave.

The rock broke apart in midair, with observer reports stopping when the meteor reached 22 miles (35 kilometers) in altitude, although Newark Liberty International Airport briefly tracked pebbles falling from the sky with Doppler weather radar after that. Fragments from only one meteorite ‪—‬ called Hillsborough, after the town where it crashed through the New Jersey home ‪—‬ were recovered.

The American Meteor Society used its cameras in Northford, Connecticut, and Douglassville, Pennsylvania — along with a doorbell camera in Wayne, New Jersey — to figure out the meteor's origin, Mike Hankey, an operations manager at the American Meteor Society and co-author of the study, said in the statement. "The path traced back to low in the asteroid belt."

Hillsborough is the second stony meteorite of its type ever spotted in a fall. Later analysis showed that the meteorite is full of ancient brines or salt. Scientists classified the meteorite as a type of stony space rock called a carbonaceous chondrite.

Scientists will compare the salt minerals to samples of asteroids Ryugu and Bennu, both of which contain ingredients of life and are samples of another carbonaceous chondrite type that formed earlier than Hillsborough. This analysis could help scientists further trace the origins of life-friendly chemistry in the early solar system.

This week's science news reminds us how the past still speaks if we listen closely, with news of the discovery of 18 ancient Egyptian tombs filled with dozens of gold tongues topping the bill.

The ancient Egyptians believed that gold was the flesh of the gods, meaning that bestowing gold tongues upon the deceased could help them speak in the afterlife. But it's not entirely certain whether all of the newly found gold objects were tongues (one may actually depict a wheat ear, a symbol of fertility), and the mystery of a possible false door inside the tomb is also stirring up debate.

It's not the only ancient Egyptian discovery causing disagreement among archaeologists this week; an analysis of the nearly 4,000-year-old skeletal remains of ancient Egyptian princesses reveals they may have hunted or trained with the military — though not all experts agree.

Elsewhere, archaeologists discovered a curious ancient chariot among the remains of a mysterious society that burned down its own buildings before disappearing. We also learned that an ancient Bronze Age shaman thought to be a man was actually a woman, and researchers revealed the origins of more than 150 liberated Africans who had been left to die by the British Navy on the island of St. Helena.

We anticipate further ancient discoveries after a new study revealed that DNA can last for up to 50,000 years in Africa. Meanwhile, we published an excerpt describing how experimental archaeologists used ancient techniques to mummify a modern-day person — part of our coverage of author Sam Kean's book "Dinner with King Tut: How Rogue Archaeologists Are Re-creating the Sights, Sounds, Smells, and Tastes of Lost Civilizations."

Sugar found in space

Sweet! Sugar found in raspberries was discovered near the Milky Way's center, hinting that life's ingredients are common in space

Astrochemists delivered a sweet surprise this week, with news that they had detected a type of sugar called erythrulose in interstellar space, near the center of our Milky Way galaxy.

Erythrulose, consisting of four carbon atoms, is found in raspberries back on Earth. But its presence in space is a mouthwatering sign that the essential ingredients for life are highly abundant across our galaxy. That could make life much more prevalent than we thought, and could mean that aliens may also have a sweet tooth.

Discover more space news

—'Smaller than the tiniest scale in nature': Physicists made a black hole out of light and used it to test Stephen Hawking's elusive radiation theory

—'The moon looked wrong': Artemis II mission controller Chris White on taking historic lunar flyby photos from 250,000 miles away

—James Webb telescope captures never-before-seen glimpse of 'Centaur' galaxy's battle wounds — Space photo of the week

Life's Little Mysteries

What is the roundest animal?

Animals come in all shapes and sizes, but are any a satisfyingly perfect sphere? It turns out that this deceptively simple question holds some evolutionarily profound implications.

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Amateur astronomer 'geoguesses' an ancient crater

'This was one of the most arduous expeditions I've ever done': Scientists confirm that 15-mile-wide pit found on Google Maps is ancient meteor crater

Geoguessing emerged in the last decade as a geography game (and later a popular esport) in which players deduce locations from Google Maps imagery. But what about geoguessing something completely undocumented, and one that only trained scientists should be able to recognize?

In that circumstance, amateur astronomer Joël Lapointe should be crowned this year's champion. Using Google Maps to plan a hiking trip in Quebec's Côte-Nord region, Lapointe stumbled upon an indentation that has now been confirmed by scientists to be a 390 million-year-old scar from a gigantic asteroid collision.

"I get lots of messages from the public thinking they have found a crater and 99/100 turn out not to be the case," Gordon Osinski, a professor of planetary geology at Western University in Canada who confirmed the find, told Live Science in an email. "This is one of those rare examples that shows this is possible."

Discover more planet Earth news

—Tropical forests stop absorbing carbon dioxide during El Niño events. This year could be the worst.

—Venezuela's devastating 'earthquake doublet' holds a warning for California's San Andreas Fault

—'These are striking forecasts': Super El Niño keeps getting even more likely, and it could bring a humanitarian crisis

Also in science news this week

—5 'extremely rare' iron shackles discovered in France highlight Celtic slave trade 2,300 years ago

—Nobel Prize-winning physicist and team use Claude AI to solve decades-old math puzzle

—New 3D silicon chip stacks circuits on top of each other to boost computing power

—Robot dog can climb stairs, navigate a forest and bound over logs thanks to new, rapid AI training technique

—Scientists are deep-freezing koala eggs and sperm to protect the species from extinction

—Heaven Lake: China's deepest lake sits atop a colossal volcano and belongs mostly to North Korea

Something for the weekend

If you're looking for things to keep you busy over the weekend, here's a selection from our best opinion pieces, interviews, diagnostic dilemmas and crosswords that we published this week.

—Tobacco companies are pushing nicotine pouches on teens — and we need to act now to stop them [Opinion]

—'It affects your daily life suddenly': Sea level researcher explains why once-in-a-century floods could become the new normal [Interview]

—Diagnostic dilemma: Junk-food diet caused a teen's permanent blindness [Diagnostic Dilemma]

—Live Science crossword puzzle #52: The moon's other name — 2 down [Crossword]

Science photo of the week

Orange-lipped monkey that roars and snorts deep in Congo rainforest is new species to science

Hello! A new monkey just dropped!

Named Colobus congoensis after the remote region of the Democratic Republic of the Congo where it was found, this striking newfound species has orange lips and makes unique roars and snorts.

The monkey's discovery is remarkable, most of all because finding new primates is extremely rare — with only five new ones being identified in Africa over the past 75 years — and also because of its relatively large size. Pinning down the species took years of careful tracking and documentation, alongside work with people from eight local villages who had knowledge of it.

Besides being a cool find in its own right, the discovery points to there being potentially many more undiscovered mammals, fish, reptiles and plants hidden inside the Congolian rainforest.

Follow Live Science on social media

Want more science news? Follow our Live Science WhatsApp Channel for the latest discoveries as they happen. It's the best way to get our expert reporting on the go, but if you don't use WhatsApp we're also on Facebook, X (formerly Twitter), Flipboard, Instagram, TikTok, Bluesky and LinkedIn.

Animals come in a wide range of shapes and sizes, from spindly stick insects to blubbery whales. Round animals are harder to come by, but they're more common in the ocean than on land. So what is the roundest animal, and why are round animals uncommon?

At a glance, round animals might not seem that out of place on land. After all, small mammals like rabbits and pikas often look a bit spherical when their fur is puffed out and they're sitting. But Chris Law, an evolutionary biologist at the University of Washington in Seattle, said this shape is mostly an illusion.

"They're physically not as round as they appear to be," he told Live Science.

A sphere has the lowest surface-area-to-volume ratio of any shape, which is ideal for heat conservation. Law said the ability to curl or scrunch into a sphere can be essential to the survival of small animals, which lose heat more quickly than larger animals do.

Rolling into a circle can also offer protection. To safeguard their vital organs, animals like armadillos and hedgehogs roll into balls when threatened, leaving only their armor or spikes exposed to predators. But when you look at the skeletons of these supposedly round critters and their shape when they're not scrunched up, they aren't round at all, Law said.

In fact, there are several reasons why round creatures are rarely found on land. Being perfectly round all the time would make it difficult to fit into small spaces, which is a key survival technique for avoiding predators, he added, and with the effects of gravity, having a lot of unsupported round mass puts strain on an animal's body. Overly round mammals, like obese cats and dogs, often suffer joint issues and other health problems.

"As a round animal, you're probably going to lose mobility, and you're going to be picked off by predators pretty easily," Law told Live Science.

There are exceptions, however. For example, beetles are small enough not to be affected as much by gravity and can fit into nooks and crannies without much wiggling. Their round shape coupled with their hard carapace makes them more difficult for predators to eat. And rain frogs puff up into a round shape to keep predators from removing them from their hiding spots.

If we're counting animals that are only round sometimes, then pill bugs (also known as rolly pollies) might take first place for the roundest land animal. But if not, rain frogs, and beetles like ladybugs, are the top contenders for the roundest land animal. But even these animals aren't perfectly round; ladybugs have flat bottoms to make it easier to move around, and rain frogs are less spherical when not puffed up.

Round sea animals

Being round at sea is a little more feasible than it is on land. In fact, sometimes, it's critical to survival.

Karly E. Cohen, a biomechanist at Friday Harbor Labs in Washington, studies lumpsuckers, a type of fish she describes as "quite round." These bulbous fish have suction cups made of enamel on their stomachs, which they use to latch on to surfaces at the bottom of the ocean. Lumpsuckers have armor, also made of enamel, covering their round shape. According to Cohen, lumpsuckers' roundness plays a huge part in keeping them attached to the seafloor or other surface. The curve of their bodies, coupled with the tooth armor, modifies the drag around the animal, creating a force that pushes them down rather than shooting them into the water column.

Although gravity still works underwater, buoyancy helps push objects up, meaning the effects of gravity do not feel as strong at sea as they do on land. According to Cohen, lumpsuckers can get around just fine, if a bit more slowly than their more streamlined neighbors. And like pufferfish and porcupine fish, lumpsuckers' round shape and uninviting exterior make them tough to swallow ‪—‬ literally.

"There's no real good way to eat an apple whole; you have to take a bite," Cohen told Live Science. "And then this thing is armored, so it's very hard to take a bite."

All about symmetry

Despite their spherical shape, lumpsuckers don't quite win the award for the roundest animal. Lumpsuckers, like most animals, have bilateral symmetry, which means they are divided into two symmetrical sides across one plane of symmetry. But there are animals that have radial symmetry, which means they are symmetrically arranged in a circle around a central point with multiple planes of symmetry.

Echinoderms ‪—‬ which include sea stars, sea urchins and sand dollars ‪—‬ have pentaradial symmetry, which means they have five planes of symmetry arranged around a central point. According to Laurent Formery, a developmental biologist at the Oceanological Observatory of Banyuls-sur-Mer in France who studies echinoderms, scientists aren't entirely sure of the benefits of pentaradial symmetry or why echinoderms are the only modern animals that have it.

However, Formery thinks being divided into five sections instead of two may give echinoderms better sensory perception than bilaterally symmetrical animals. Echinoderms have decentralized nervous systems, meaning that instead of a brain, they have a series of neurons distributed evenly across their body, and photoreceptors all over their skin.

"They are kind of like a big crawling eye and brain, so they are receiving information from everywhere," he told Live Science. "They have a completely different way, that is difficult for us to imagine, of interacting with their environment."

Because of this unique organization, radially symmetrical animals can sense predators from any direction. They can also easily switch which segment of their body is in the lead, making it easier for them to change directions to capture prey.

Discounting their spikes, certain species of sea urchin are almost perfectly spherical. Like lumpsuckers, sea urchins' spherical shape, coupled with their spines, makes them difficult meals for predators, Formery said. Sponges lack any symmetry, so they can develop all sorts of body shapes. One species, called the death ball sponge, looks like a Sputnik lamp, with many hook-covered spheres attached to its spindly "arms."'

Under the sea, urchins in the genus Histocidaris, like Histocidaris purpurata and Histocidaris formosa, are the closest to perfect spheres, making them the top candidate for roundest animal.

Although roundness might be uncommon in the animal kingdom, Cohen said it's fascinating to study these animals and the reasons for their adaptations.

"As somebody that's interested in the tools and ways organisms work in their environments," she said, "they're a real treasure trove of evolution."

What do you know about the animal kingdom? Test your knowledge with our animal quiz!

Science word of the day: Neuroplasticity

Pronunciation: Nur-roh-pla-STISS'-ih-tee

What it means: Neuroplasticity is the ability of the nervous system to adapt to the environment or to injuries by forming new connections and modifying and strengthening existing connections. Neuroplasticity can happen after an injury, such as a stroke or trauma to the brain, but it also occurs during ordinary learning. Just by reading this definition, you may be making new, sustainable brain connections.

How to use it in a sentence: Scientists used to think neuroplasticity was an ability only the the young had, but researchers are increasingly learning that aging brains can adapt throughout the lifespan, much to everyone's relief.

Can you crack our science word of the day puzzle, Chain Word?

Scientists long thought that when RNA kick-started life on Earth 4 billion years ago, it could form only small, simple structures. But new research shows that naturally occurring RNA molecules can also adopt large, sophisticated geometries, like filaments and cages. Now, scientists wonder whether the structures were present at life's beginning.

According to an idea known as the RNA world hypothesis, RNA-based life-forms preceded modern ones that use DNA and protein. RNA, a molecular cousin of DNA, still plays roles in modern cells but does not serve as the primary genetic material. By comparison, primordial species used RNA to store genetic information and to catalyze reactions as stand-in enzymes.

Proteins eventually dominated as enzymes, perhaps because they can fold into more diverse figures than RNA can. That's because proteins are composed of 20 types of subunits, called amino acids, each with a unique structure, whereas RNA is composed of only four subunits, called nucleotides, that all adopt similar shapes.

Scientists originally thought that only proteins were varied enough to assemble into large structures, but a new paper has demonstrated that RNA — though more limited in its variety — also has the capacity to form these large configurations. The research was posted to the preprint server bioRxiv July 1 and has not been peer-reviewed yet.

"We show RNA can do things which we have never seen before," said study co-author Lin Huang, an RNA biologist at Sun Yat-Sen University in China. "It suggests that at the origin of life RNA could assemble into all kinds of shapes," he told Live Science.

Huang and his colleagues had hypothesized that RNA molecules could link together if they possessed sequences that fold into "kissing stem loops." This occurs when an RNA strand folds over on itself, forming a structure that resembles a loop in a shoelace. If loops from different RNAs bond together, or "kiss," the molecules could link up and form larger complexes, the researchers proposed.

After sifting through a bevy of RNA sequences, the researchers found a family of RNA molecules encoded by bacteriophages ‪—‬ viruses that infect bacteria ‪—‬ that form these loops. They purified several of these RNA molecules in the lab, allowed them to assemble in a dish, and then captured their structures using cryo-electron microscopy.

They discovered that some of the RNA molecules formed long filaments. These resembled protein-based filaments such as the cellular cytoskeleton, a scaffold that participates in many functions, including shaping and moving the cell.

Other RNA molecules assembled into cages as large as common viruses. Some of these took the form of an icosahedron — a 3D shape that is built from 20 equilateral triangles and resembles a soccer ball. Many viruses, including herpesviruses, package their genome into protein-based icosahedra called capsids. This raises a question: Could RNA-based capsids have packaged genomes in the RNA world?

This work demonstrates that RNA had the capacity to assemble into these elaborate structures during the RNA world, Huang said, but that doesn't prove it actually happened.

"I definitely think that environmental parameters are a question," Anna Medvegy, an evolutionary biologist at Eötvös Loránd University in Hungary, told Live Science in an email. "Can these structures form in the environment in which the hypothetical RNA World existed?" said Medvegy, who was not involved in the new work.

If scientists could recreate these environmental conditions at the dawn of life, such as high temperatures and low pH, and still observe that these structures take shape, that would strengthen the theory that they could have been present in the RNA world, she said.

Although the RNA cages and filaments were large, Huang's team generated them using only short RNA strands, each no longer than 200 subunits. Medvegy said long RNAs are susceptible to breaking, so if short strands can assemble into these structures, that provides more promise that these multi-tiered molecules could have formed in the RNA world.

Another question is whether these elaborate RNA complexes currently assemble inside the bacteriophage-infected bacteria from which they were derived. So far, Huang's team has only seen these structures form in a lab dish, so they need to determine if factors inside bacteria, such as proteins, would either disrupt or enable their formation inside cells.

Beyond providing insight into life's beginnings, these RNA cages could have potential applications in biotechnology, Huang thinks. Efforts are underway to use DNA folded into "DNA origami" to deliver drugs into cells, and Huang thinks DNA's older cousin, RNA, could one day play a similar role in medicine.

This year's El Niño will almost certainly become the strongest ever recorded, an analysis by a prominent climate researcher has warned. Though other scientists have cautioned that it's still too early to say what it will unleash.

Dynamical models now assign a 90% chance of the 2026-2027 El Niño being an all-time record event, sending temperatures in the Pacific Ocean up to around 3.6 degrees Celsius (6.5 degrees Fahrenheit) above average, according to an analysis by Zeke Hausfather, a research scientist at Berkeley Earth and an author of the Intergovernmental Panel on Climate Change's Seventh Assessment Report.

As the warm phase of a multiyear natural climate pattern, the El Niño could bring unprecedented temperature extremes to an already-warming world. The natural climate pattern is infamous for boosting global temperatures and fueling disruptive weather events such as floods and droughts.

A strong El Niño doesn't guarantee more severe weather impacts. The current El Niño models are also imperfect predictions of what's to come, and we won't know the true nature of this El Niño event until it peaks, likely later this year. However, forecasters have been warning of potentially supercharged El Niño conditions for months, and as more data emerges, there are more reasons to prepare.

According to projections by the World Meteorological Organization, the current El Niño — officially declared on June 11 — is on track to rapidly develop into a "strong" event between July and September. The National Oceanic and Atmospheric Administration's (NOAA) Climate Prediction Center now predicts a more than 80% likelihood of very strong El Niño conditions taking hold by the end of the year, ranking this El Niño event among the largest in the historical record.

"These are striking forecasts," Emily Black, a professor of terrestrial processes and climate at the University of Reading and a senior scientist at the National Centre for Atmospheric Science in the U.K., told Live Science in an email. "El Niño forecasts always come with uncertainty, but the level of agreement between models at this time of year, combined with the observed warming already underway in the tropical Pacific, means this should be taken very seriously."

"The important point is that a very strong El Niño would substantially shift the odds of damaging weather in many parts of the world, particularly in the Global South — with severe impact on livelihoods," Black added.

The International Rescue Committee, a humanitarian organization, has warned that the intense El Niño conditions threaten to unleash severe flooding and drought across East Africa and Asia, hitting some of the most vulnerable communities, Al Jazeera reported Tuesday (July 14).

During El Niño, warmer waters gather east of the equatorial Pacific, forcing the jet stream south. In the U.S., this typically brings warmer, drier conditions to the Northeast, while the Gulf Coast and Southeast experience an increased risk of flooding. Globally, the net result of the warmer waters is more heat in the atmosphere, on top of the temperature rise from human-driven global warming.

"El Niño is a natural climate phenomenon, but it is now happening against the backdrop of a much warmer planet," Black said. "That matters because a strong El Niño releases heat and energy into an already warmed world."

"This does not mean every impact can be attributed simply to El Niño or simply to climate change," Black added. "The two interact. El Niño can load the dice towards drought in some regions, flooding in others, marine heatwaves, disrupted monsoons and unusually high global temperatures. Climate change makes many heat extremes more severe and can intensify heavy rainfall because a warmer atmosphere can hold more moisture."

The last El Niño event occurred between 2023 and 2024. Both years broke temperature records, with 2024 becoming the hottest on record and the first to breach the 1.5-degree- Celsius (2.7 degrees Fahrenheit) warming limit set by the 2016 Paris Agreement. The current El Niño is forecast to be more intense than the one in 2023 and 2024, with the projected "very strong" status putting it in a different class of severity.

The strongest El Niño in history?

Hausfather's analysis reports that there's around a 90% chance that the current El Niño will be the strongest ever recorded, with data from multimodel forecasts suggesting that it may obliterate the previous record.

"With the July runs now in from 667 ensemble members across 14 different seasonal forecast models, it looks like this year's El Niño is not only very likely to be the strongest event since reliable records began ‪—‬ it may end up the strongest by a truly mind-blowing margin," Hausfather wrote in The Climate Brink Substack post published Monday (July 13).

NOAA recognizes El Niño conditions when the eastern tropical Pacific Ocean is at least 0.5 C (0.9 F) warmer than the historical average, while wind, surface pressure and rainfall in the region are also consistent with El Niño conditions. The El Niño is then categorized as weak, moderate, strong or very strong. A very strong El Niño (above 2 C, or 3.6 F, warmer than the historical average) is often nicknamed a "super" El Niño, though it's not a scientific term.

The July models suggest that temperatures will likely sail past 2 C above average in the coming months and could potentially even exceed 3.5 C (6.3 F) above average by the end of the year. This is based on newly introduced sea surface temperature forecasts that account for rising background temperatures that can inflate El Niño warming figures. In the traditional and most widely used indices, the temperature-anomaly forecasts cluster closer to 4 C (7.2 F), with some even exceeding 4 C.

In The Climate Brink Substack, Hausfather noted that the multimodel median for the event's peak is currently forecast at 3.6 C (6.5 F), or around 0.8 C (1.4 F) hotter than the prior record holder (2.75 C, set in the 2015-2016 El Niño event). Hausfather wrote that around 91% of ensemble members (individual computer models) have this El Niño exceeding the 2015-2016 record at their peak — around 77% likelihood in the newly introduced indices.

However, Black stressed that the models are still estimates, and not guarantees.

"It is certainly plausible that this could become a record-breaking El Niño, and the latest forecasts make that a real possibility rather than a remote one," Black said. "However, I would still be cautious about treating any probability estimate as a certainty."

"There are two reasons for caution," she added. "First, this event has not peaked yet, and El Niño events usually reach their maximum strength later in the year. Second, 'strongest ever recorded' depends on the index, dataset and baseline used."

"Impacts are what matter"

The most severe El Niño events have left a trail of devastation in their wake. For example, the 2015-2016 El Niño saw a record-breaking hurricane season in the central North Pacific, severe drought in the Caribbean and Ethiopia, and, of course, abnormally hot global temperatures, according to NOAA's Climate.gov. If the forecasts pan out, the current El Niño will match or exceed the 2015-2016 event, as well as an even more infamous super El Niño that occurred between 1877 and 1878, long before modern recordkeeping of El Niño began in 1950.

The 1877-1878 event likely fueled an extreme drought that fed into the 1876-1878 global famine, which ultimately killed more than 50 million people — making it among the worst humanitarian crises in history. However, the disaster was far from just an environmental one, with extractive colonial agricultural policies helping to create conditions for a massive humanitarian crisis. Nonetheless, the famine highlights what can happen when environmental and socioeconomic factors converge.

Even though the world has changed a lot since the 19th century, experts have said a super El Niño could still cause severe shocks to our food systems. This is especially true at a time when researchers say food insecurity is not just confined to low-income countries and that climate change is already pushing agricultural systems to the brink.

The El Niño-Southern Oscillation cycle triggers a warm El Niño and then a cold La Niña roughly every two to seven years, with each phase typically lasting around nine to 12 months. Carbon Brief has predicted that 2026 is likely to be the second-warmest year on record, with the intensifying El Niño increasing the likelihood that 2027 will be the warmest year ever recorded.

The strength of an El Niño event does not necessarily correspond to the size of its influence or impact, according to the Climate Prediction Center. More severe events typically, but not always, increase the certainty of expected impacts. Black believes the impact of an El Niño event is more important than where it ranks in the observational record.

"Records are compelling, but impacts are what matter," Black said. "Even if it falls just short of a record, a very strong El Niño can still have serious consequences. Finally, these forecasts are concerning, but they are also useful: they give societies time to anticipate possible impacts and act before the worst effects are felt."

U.S. health officials have identified shredded iceberg lettuce served at Taco Bell as one source of contamination behind an outbreak of parasitic infections affecting over 1,000 people.

The outbreak has been caused by the protozoan parasite Cyclospora cayetanensis, which can enter the body when someone consumes food or water contaminated with the parasite. Since May 1, there have been 1,644 confirmed cases across Indiana, Kentucky, Ohio, West Virginia and Michigan, which is currently the hardest-hit state.

(Health officials are also investigating additional cases of Cyclospora infection in the U.S. that have yet to be linked to this specific lettuce-related outbreak. Those other potential cases remain under investigation and total over 5,100, per the Centers of Disease Control and Prevention (CDC).)

In the five-state outbreak, there have been 94 hospitalizations and no deaths to date.

Through an investigation, health officials found that all 1,644 of the sickened people with confirmed cases of Cyclospora reported eating Taco Bell in Indiana, Kentucky, Michigan, Ohio or West Virginia before becoming ill. Interviews with the affected individuals suggested that shredded lettuce might be a common source of exposure.

The Food and Drug Administration (FDA) then investigated the source of the lettuce, identifying a single supplier of iceberg lettuce from Mexico that was used by Taco Bell locations where the people ate before becoming ill. News reports have named California-based Taylor Farms as the supplier.

"FDA is working directly with the identified supplier to determine if potentially contaminated shredded iceberg lettuce remains on the market," an FDA notice states. "As part of this investigation, FDA and state partners have initiated collection of product samples for testing and analysis."

The investigation is ongoing, and additional sources of contamination or affected restaurants could possibly be identified later, the FDA noted. In the meantime, Taco Bell has said it will stop using lettuce from the implicated supplier.

"Taco Bell is working to stop use of all lettuce implicated by this investigation. Not all Taco Bell locations in these states received implicated product," the FDA statement says.

Currently, the CDC is warning consumers not to eat shredded iceberg lettuce served at Taco Bell locations in Indiana, Kentucky, Michigan, Ohio or West Virginia.

Case counts reported by individual states may differ from the FDA's and CDC's counts, because states may include both probable and confirmed cases. The FDA and CDC will update their totals once they can confirm additional cases reported to them.

Symptoms of Cyclospora infection typically emerge two to 14 days after a person consumes the parasite. These symptoms include watery diarrhea, fatigue, cramping, bloating, gas and loss of appetite, and without treatment, they can last between a few days to a month or more. The infection is treated with an antibiotic, which blocks the parasite's ability to multiply.

This article is for informational purposes only and is not meant to offer medical advice.

Up to 90% of Earth's population may be able to see the enormous "God of Chaos" asteroid Apophis zoom past our planet in less than three years, scientists say. The skyscraper-size space rock will come closer to us than some satellites, making it clearly visible to the naked eye during the "once-in-a-millennium" skywatching event.

This will be the first time humans have ever been able to predict a flyby of an asteroid visible to the naked eye, and it could be a once-in-a-lifetime experience for the up to 7.6 billion people who manage to see it, scientists said at the Apophis T-3 Years workshop, held June 18-19 at the University of Padua in Italy.

"Sighting Apophis as it passes by is a way of feeling a shared cosmic experience, realizing the smallness of Earth in the vastness of space," Richard Binzel, a planetary scientist and asteroid expert at MIT who helped organize the recent workshop and create new maps of the flyby, told Live Science in an email.

The asteroid, dubbed 99942 Apophis (or simply Apophis), is a peanut-shaped object that spans about 1,500 feet (450 meters) across at its widest point, or around as wide as the Empire State Building is tall, making it large enough to wipe out a city if it ever impacted our planet. Apophis likely originated from the solar system's main asteroid belt between Mars and Jupiter, but it now resides between the orbits of Venus and Earth, circling our home star roughly every 10.5 months. The name Apophis comes from Apep, the Egyptian serpent god of darkness and disorder, which has earned the space rock the nickname "God of Chaos."

On April 13, 2029, Apophis will make a superclose flyby of Earth, reaching a minimum distance of around 19,000 miles (30,600 kilometers) from our planet, according to The Planetary Society. That's much farther away than the International Space Station and the thousands of other spacecraft in low Earth orbit, but it's closer than several hundred satellites stationed in an elevated geosynchronous orbit. (Apophis poses no threat to these high-altitude satellites because they can easily be maneuvered away from its projected path.)

There is currently zero chance that Apophis will impact our planet during the flyby or within the next 100 years. However, some experts have suggested that there is still a slim chance that the asteroid's trajectory could change before it reaches us. Other experts worry that the upcoming flyby could permanently alter the space rock or nudge it off course, potentially increasing the chances it could hit us in the future.

Therefore, scientists are keen to monitor the flyby in great detail and will coordinate observations from telescopes around the world to understand the potentially hazardous asteroid better. Several spacecraft, including NASA's OSIRIS-APEX, will also attempt to fly past Apophis to study its structure and trajectory. The event is so significant that the United Nations has declared 2029 the International Year of Asteroid Awareness and Planetary Defence.

Researchers also hope the flyby will provide a unique opportunity to inspire the next generation of space scientists. "I hope people will find the Apophis flyby intriguing, as it is not anything fearful or frightening at all," Binzel said. "Who knows how many young people might find a spark of curiosity that leads them on a path to a career in space studies."

Who will see Apophis?

The new maps help break down who might be able to see Apophis throughout the roughly seven-hour period it passes by our planet. The asteroid will be visible only to people who are positioned within its path at twilight or night amid clear skies and limited light pollution.

At the start of the flyby, when Apophis is farthest from Earth, the asteroid could be visible to around 4.5 billion people across Australia and most of Asia. By the end of the flyby, when the space rock reaches its closest point to us, it might be visible to around 1.9 billion people in eastern South America, northern Africa and parts of Europe, according to the new maps.

Peak visibility will occur around halfway through the flyby, when Apophis might be seen by as many as 5.7 billion people across eastern Africa, Southern Europe, Australia, and all of Asia and the Middle East. At this point, astronomical observatories situated on Spain's Canary Islands will likely snap the best photos of the asteroid's flyby, according to Live Science's sister site Space.com.

North America is the only continent that will not get a clear view of Apophis.

For those who are lucky enough to see the passing space rock, the asteroid will appear as a "modest star passing slowly across the sky, much like a slow-moving satellite," Binzel said, and it will shine as brightly as the stars in the Big Dipper.

Heaven Lake is a crater lake at the top of Mount Changbaishan (also called Changbai Mountain) — a colossal, dormant volcano on the border between China and North Korea that formed through successive eruptions over the past 2.6 million years.

Known in China as Tianchi, the lake is the highest and largest crater lake in Northeast Asia, according to UNESCO. It is also the deepest lake in China, according to a study published in March. The lake sits at an elevation of around 7,200 feet (2,200 meters), covers roughly 3.6 square miles (9.2 square kilometers), and has a maximum depth of 1,224 feet (373 m), according to the study.

Heaven Lake is surrounded by 16 peaks that belong to Mount Changbaishan. The lake fills a caldera created by past eruptions, the biggest of which was the "millennium eruption" that took place in A.D. 946 and remains one of the largest eruptions in modern history.

Water started to pool on Mount Changbaishan's summit after the prehistoric Tianwenfeng eruption, which scientists dated to between 70,000 and 40,000 years ago. Heaven Lake has periodically emptied and refilled since then due to precipitation, snowmelt, and an active geothermal system beneath the volcano that forces water up through fault lines.

Although hundreds of reports in the early 2000s claimed there was a creature with a head shaped like that of a horse living in the water, scientists have repeatedly said they are skeptical that any large creature could survive in Heaven Lake.

Mount Changbaishan is one of the best-preserved stratovolcanoes from the past several million years, according to UNESCO. Stratovolcanoes, also known as composite volcanoes, are volcanic mountains built from alternating layers of solidified lava, volcanic ash and rocky debris. Mount Changbaishan is an "open-air classroom for volcanism" because it recorded the different stages of multiple eruptions in astounding detail.

In North Korea, Mount Changbaishan is known as Mount Paektu or Paeku Mountain, meaning "white-topped mountain." The volcano's Chinese name means "forever white mountain."

China, North Korea and South Korea have clashed over the volcano in the past, as the mountain holds cultural and geopolitical significance for the three countries. Two border treaties between China and North Korea in 1962 and 1964 divided the volcano and Heaven Lake roughly down the middle, with North Korea securing 54.5% of the lake.

In the 2000s, China moved to develop the region around the volcano, opening the Mount Changbai Airport and the Mount Changbai Eastern Railroad to connect the region with the rest of the country.

A geological park surrounding the Chinese site of the volcano was officially designated a UNESCO Global Geopark in 2024.

Discover more incredible places, where we highlight the fantastic history and science behind some of the most dramatic landscapes on Earth.

Several ancient Egyptian princesses buried with bows, arrows and a dagger may have trained with those weapons during their lives, possibly using them while hunting or practicing archery, a controversial new study suggests.

Researchers examined the remains of six royal individuals who lived during Egypt's Middle Kingdom nearly 4,000 years ago. After analyzing the muscle-attachment sites on these bones, the researchers suggested that certain pronounced areas might be linked to repeated activities such as archery and weapon handling.

"Members of the royal family, especially the women, were active participants in skilled, physically demanding activities such as archery and hunting," study first author Zeinab Hashesh, an archaeologist at Beni-Suef University in Egypt, said in a statement.

The finding, published Friday (July 17) in the journal Frontiers in Environmental Archaeology, challenges the assumption that weapons placed in the women's tombs were largely ceremonial. It may also provide new information about the health and physical activities of royal women.

However, bioarchaeologists who were not involved in the study told Live Science that skeletal changes cannot reliably indicate a specific activity. Age, body size, genetics and other repetitive movements can produce similar results, they said.

Royals rediscovered in a museum basement

In the 1890s, French archaeologist Jacques de Morgan excavated a site near the tomb of pharaohs Amenemhat II and Amenemhat III. From these excavations, de Morgan found various royal individuals, whose partial remains were later stored at the Egyptian Museum in Cairo.

For decades, the remains were forgotten about. But in 2020, museum workers rediscovered the bones during a museum curation project. The collection included King Hor, Princess Ita, Khenmet, Itaweret and Noub-Hotep, as well as an unidentified woman who may have been Princess Sathathormeryt (also spelled Sithathoriunet). Four of the women are believed to have been daughters of the pharaoh Amenemhat II.

However, the skeletons' identities depend heavily on those 19th-century labels, which "means that we cannot be certain how reliable they really are," Sonia Zakrzewski, a bioarchaeologist at the University of Southampton in the U.K. who was not involved in the research, told Live Science in an email. Most of the individuals' skulls were missing, and only around 22% to 58% of each skeleton survived. Their soft tissues had largely decayed into powder, but the remaining bones allowed the team to estimate the sex and age and look for injuries, diseases and signs of physical activity.

Signs of weapons training?

Using X-ray scans and specialized infrared spectroscopy, which can help identify different materials, the researchers examined the entheses, the places where muscles, tendons and ligaments attach to bones. Repeated muscle use can contribute to enlarged or pronounced attachment sites, although several other processes can also create this result.

Princess Ita, who died between the ages of 28 and 34, had pronounced attachment sites on parts of her right shoulder, arm and hand. The team suggested that these changes could reflect repeated gripping and weapon handling, possibly involving the ornate dagger found in her tomb.

Princess Noub-Hotep, who died in her early 40s, had strongly developed attachment sites in her forearms and right hand. De Morgan had discovered "arrows with their barbs in an astonishing state of preservation" in the princess's tomb, according to an 1896 issue of the journal American Anthropologist.

Similarly, Princess Itaweret showed robust attachment sites around her shoulder and chest, while Khenmet had pronounced features on her arms and shoulders. King Hor also displayed differences between muscle attachments on the left and right sides of his body.

The authors argued that these patterns fit actions involved in drawing back a bowstring ‪—‬ a process that can create muscular asymmetry between the left and right upper body. They also posited that these muscular patterns could be from gripping objects like daggers or maces and suggested the weapons buried with the royals weren't just symbolic.

Experts remain doubtful

Despite the pronounced attachment sites on these individuals' bones, Zakrzewski said it's unknown if the royals got buff through archery or some other activity.

The sites on the bones show that "certain muscles appear to have been repeatedly used, but the actual cause of that use is uncertain," she said. "We cannot say therefore that these skeletal changes necessarily are associated with the use of weaponry," especially since the researchers didn't look at comparison groups from the Nile Valley or elsewhere.

Zakrzewski added that it's unknown why artifacts like arrows were included in the tombs. Perhaps they were meant to be "used by individuals associated with the deceased," she said.

Scott Haddow, a bioarchaeologist at the University of Turin in Italy who was not involved in the study, noted that some of the skeletal changes were present on both sides of the remains.

"Archery is a highly asymmetrical activity; finding generalized, bilateral robusticity in some bones (with some asymmetry observed in other bones) does not make a particularly strong case for these individuals practicing archery," he told Live Science via email.

The individuals' ages at death could also explain the differences. Khenmet was between 35 and 45 when she died, while Noub-Hotep was approximately 40 to 44. Muscle-attachment sites are influenced by aging, as well as by body size and genetics, Haddow said.

Princess versus pauper

One of the study's largest caveats was the absence of a comparative group, which would have shown how unusual the changes were compared with other Egyptians from the same period.

"It would be very useful to know how much such side differences exist in contemporaneous Egyptians, whether royal or not," Zakrzewski said.

Besides missing a comparison with a "control" group, other experts believe that the researchers are reading too much into the weapons being buried with the royals.

"Although the presence of funerary artifacts (e.g., arrows, daggers) makes the princesses' involvement in such activities plausible, the authors provide limited biomechanical or biomedical evidence to substantiate this claim," Sébastien Villotte, an anthropologist at the French National Center for Scientific Research, told Live Science via email.

He added that "a more robust approach would involve comparing these individuals to non-elite contemporaries from the same region and period. This would help determine whether such degenerative changes (at these locations) were common in the general population (who were unlikely to engage in the same activities) or truly indicative of elite-specific behaviors."

Although the study has a number of uncertainties, Zakrzewski said they shouldn't diminish the value of examining the remains. "It allows us to sort of put flesh on the bones and understand more about their lives," she said.

Can you identify these historical objects of war? Test your smarts with our weapons of the world quiz!

Archaeologists in Spain have discovered the remains of a 2,400-year-old bronze chariot that was used to honor the gods and may have had links to the ancient Etruscans, who lived in what is now Italy. ‪The discovery is "without known parallels" in Iberia, according to the research team.

The roughly 24-inch-long (60 centimeters) chariot was designed with a flat, table-like top that people would have used as a surface for burning incense as a divine offering, according to a translated statement.

The side of the chariot showcases a face sticking out its tongue. This face appears to be an unusual fusion of a gorgon, an ancient protective symbol associated with Medusa; and Achelous, a powerful river god in Greek mythology who could turn into a bull, Guiomar Pulido González, an archaeologist at the Mérida Institute of Archaeology (part of the Spanish National Research Council) who was involved with the discovery, told Live Science.

Archaeologists unearthed part of the chariot, including two legs and two wheels, at an archaeological site called Casas del Turuñuelo (Spanish for "Houses of Turuñuelo") in Spain's Badajoz province, close to the border with Portugal. The two legs look like two people holding up the table part of the chariot.

Both of the short sides of the chariot feature a mythical creature associated with safeguarding: a lion with wings and an eagle head, called a griffin. "All the figurative parts of the chariots point to protective divinities," Pulido explained, though "we are not sure what they are protecting ‪—‬ maybe the content of the chariot, or the viewers looking at them."

Archaeologists have previously discovered similar chariots made by the Etruscans, a pre-Roman people who lived in Italy from about 900 to 100 B.C. However, the newfound one is the first known chariot to feature a gorgon-Achelous face mashup, and the first of its kind to be found in the Iberian Peninsula, according to Pulido, who is also a doctoral student at the Autonomous University of Madrid studying ancient Mediterranean imports throughout the Iberian Peninsula.

Restorers working on the artifact noticed that the two people holding the chariot are wearing skirts, which would be unusual for an Etruscan chariot; typically, Etruscan-crafted bronze figures are naked, Pulido said. Despite this anomaly, the theory is that the chariot was made by the Etruscans and arrived in modern-day Spain via trade routes.

The chariot was found in a layer suggesting it was discarded around the end of the fifth century B.C., though the design of the gorgon-Achelou face's iconography indicates that it could have been made as early as the sixth century B.C.

An enigmatic people

The archaeological site that yielded the bronze chariot is in an area known as the Middle Guadiana River Valley, which has 14 known sites left behind by an enigmatic people that completely disappeared from the archaeological record around 400 B.C., Pulido noted. They were probably local populations that were heavily influenced by or mixed with the Tartessians, a civilization that settled in the Iberian Peninsula around the eighth century B.C. and was known for its elaborate writing system.

Each of the 14 sites holds the remains of burnt buildings that were subsequently filled in with soil and fragmented objects, Pulido said. The recently discovered chariot had been intentionally broken — it has no other damage besides being halved — and included in the debris.

The current leading theory regarding these ruins is that, for some unknown reason and around the same time, the inhabitants of these centers burned down their buildings, filled them in and then abandoned the sites. The burning and filling seem to have been too intentional for it to have happened in the context of an enemy attack, according to Pulido. "Instead, they may have formed part of a carefully planned ritual of closure, a symbolic farewell to buildings that were intentionally decommissioned," she said.

Then, this culture "disappeared from the archaeological record," Pulido said. But other evidence, including imported pottery from Greece and other Etruscan bronze objects, suggests that whoever these people were, they participated in the ancient trade networks stretching across the Mediterranean, with their elite having enough wealth to afford imported objects, she said.

See if you know what these mysterious artifacts are with our archaeological fragments quiz!

Two physicists have used generative artificial intelligence (AI) to solve a stubborn mathematical problem in physics that had vexed researchers for more than a decade.

Their solution, described July 1 in the Journal of Statistical Mechanics: Theory and Experiment, came about when the physicists chose to revisit a problem they thought they had attempted to solve exhaustively within a topic they knew intimately. This concept, known as jamming, refers to the sudden transition from a fluid system to a rigid-but-disordered one.

The simplest way to understand this idea is to imagine a pool table covered with billiard balls. If you keep adding balls, eventually the table becomes so congested that there is no space for any more and each ball on the table is securely held in place by its neighbors. This is a disordered, completely frozen situation known as a jammed state.

The study authors —‬ ‪Giorgio Parisi, winner of the 2021 Nobel Prize in physics, and Francesco Zamponi, ‪both physicists at the Sapienza University of Rome ‪—‬ and collaborators had mathematically described jamming and offered numerical solutions in a 2014 paper. In the process, they noticed that two parameters — $a$ and $b$ — would mysteriously always add up to 1.

"The parameters $a$ and $b$ dictate exactly how the distribution of contact forces and small gaps [between balls] scales as the physical system hits that critical jamming point," Zamponi told Live Science in an email. "We were quite bothered by the fact that we had never been able to mathematically prove the relation $a+b=1$."

Moreover, separate work by Matthieu Wyart, a physicist at the Swiss Federal Technology Institute (EPFL), took a completely different approach but yielded the same relation. For Zamponi and colleagues, this suggested "entirely new physical concepts" were needed to link their and Wyart's work and simultaneously explain why $a+b=1$.

Fast-forward a decade, and no progress had been made in finding these new concepts nor a reason for why $a+b=1$. Stuck in a rut, Parisi had a thought: perhaps generative AI could offer a fresh perspective. For this, he turned to Anthropic's Claude. After Claude successfully reproduced the 2014 numerical result, Parisi prompted the AI to prove why $a+b=1$.

"Giorgio initially sent me Claude's output while I was traveling, so I ended up reviewing it on an airplane," Zamponi recalled. "As I read through the LaTeX file Claude generated, it became immediately clear that the core idea was correct … That moment significantly shifted my perspective on what these models can achieve in theoretical physics."

Though the initial output contained some errors that required revision, the fundamental idea was correct. And in a total of just 40 prompts, the researchers had a verified publishable analytical solution. To their surprise, this solution was hidden directly within the equations themselves; they didn't need any external physical assumptions or deep connections between functions.

"It is entirely possible that a pure mathematician who works full time on such kind[s] of equations might have spotted the solution," Zamponi told Live Science. "But this is a particularly interesting point for us, as it highlights how Claude gave us instant access to a vast repository of mathematical training and formal skills that lay just outside our usual domain."

Whether Claude simply trawled the vast mathematical literature and used pattern matching to find a way to solve their problem or if it applied something akin to creativity is, for Zamponi, moot because they "could not see the path forward, and Claude did," he said. And although he admitted that interacting with AI forces him to reconsider his definitions of reasoning, intuition, and creativity, Zamponi will continue to collaborate with the technology to speed up mundane tasks and provide fresh perspectives on challenging problems.

Now, Zamponi is applying this collaborative approach to a problem involving the “random sequential addition of hard hyperspheres," he said. “It is another excellent case study because, while the AI drastically accelerates writing and optimizing code, I have had to provide the vast majority of the conceptual ideas, which suggests that human guidance remains indispensable, at least in this case."

Little is known about the tens of thousands of liberated Africans who were buried on the remote Atlantic island of St. Helena in the 19th century. But now, a new chemical and dental analysis reveals where more than 150 of these individuals spent their childhoods in Africa.

About 27,000 liberated slaves ended up on St. Helena after the British Empire outlawed slave trading in 1807, with the Royal Navy enforcing the ban. St. Helena was used to drop off enslaved people whom the navy had liberated. However, about 8,000 of these newly liberated people, who were malnourished and in poor health, died on the South Atlantic island not long after landing there.

These burials were forgotten until they were found ahead of an airport construction project centuries later. The dig, carried out in 2007 and 2008, found the buried skeletons of the liberated slaves, according to a new study published Thursday (July 16) in the journal Science.

To determine the origins of the liberated slaves, scientists studied the teeth of 152 individuals, measuring the ratio of strontium isotopes, which are atoms of the element strontium that have a different number of neutrons in their nuclei. When a person's teeth grow during childhood, the strontium isotopes in the food they eat and the water they drink are incorporated into their tooth enamel. By studying the unique strontium ratios in a person's enamel, researchers can determine where individuals lived as children.

The study found that many of the liberated slaves lived near the coast of West Africa, although some lived farther inland.

"Most individuals likely came from coastal or near-coastal regions in western Central Africa, [and] others appear to have originated much farther inland, implying forced displacement over hundreds to thousands of kilometers before embarkation," the team wrote in the study.

In one case, a man who died between the ages of 19 and 25 had been moved from inland Angola to the coast as a child, between the ages of 7 and 9. The scientists detected this movement by comparing the isotope signatures of his teeth that grew when he was around 7 to those that grew when he was around 9. He may have been trafficked as a slave when he was between those ages, the team wrote in their paper.

It's "possible that their displacement during childhood was connected with their enslavement," study co-author Hannes Schroeder, an associate professor of molecular ecology and evolution at the Globe Institute at the University of Copenhagen, told Live Science in an email. Unfortunately, we don't know much else about this individual, Schroeder said.

In addition to this man, the study found evidence that at least 10 of the liberated slaves had been transported as children or early adolescents.

Schroeder said it's not clear if any of the people in the study have living descendants on St. Helena but it's unlikely given that these people probably died not long after landing on the island.

The team also used historical records and DNA analyses of 20 of the individuals to help determine where they were from. The DNA analysis "revealed affinities with present-day populations from Gabon and northern Angola, while also showing considerable diversity," the team wrote.

"These results are consistent with eyewitness accounts by Royal Navy personnel on the island, who reported multiple languages among the captives, including Congo and Benguela dialects," the team wrote, noting that the findings also align with historical records from Angola, Cuba and Brazil.

"The tragedy of enslaved children"

The new study sheds much needed light on the lives of enslaved people, researchers told Live Science.

"This study is especially impactful because it investigates instances of slavery, where knowledge of individuals' ancestors and descendants have been erased from history," Steven Micheletti, a geneticist who has studied the trans-Atlantic slave trade but was not involved in the new research, told Live Science in an email. However, he said the study would have benefited from analyzing the DNA of more people.

David Head, a historian at the University of Central Florida who was not involved in the study, praised the study. We "know a lot about the embarkation/disembarkation of enslaved people, thanks to slave traders keeping records of their business but less about where people originate from and how they got to the ports," he said in an email. "It's not surprising that the study found most people came from relatively close to the coast but that there were cases of people who came from much farther inland as well."

What "seems most interesting to me is the promise of learning about individuals, which is often very hard to do since the slave traders kept the records," and records kept by slave traders tended not to include a lot of information on the lives of their slaves, Head added.

He was also struck by the study's findings that many of the enslaved people were moved at a young age. "It makes sense that slave traders wanted younger people, with the potential for many years as laborers, but to have [this] reinforced through their [teeth] reveals the tragedy of enslaved children."

Alex Bentley, an anthropology professor at the University of Tennessee who wrote an article discussing the study in the journal, praised the research, noting how it combined the isotope data with historical records and some DNA analysis.

This is important because "although strontium isotope ratios in human tooth enamel ultimately reflect local geology, they record a biologically available mixture of foods and water consumed while the tooth was forming during childhood," Bentley told Live Science in an email. "So it's rarely a unique geographic fingerprint." It's possible that similar approaches could be used to study the origins of enslaved people in the United States, Bentley added.

The remains were reburied in 2022. The scientists and members of St. Helena's community looked into the possibility of repatriating the remains to countries in Africa where the people came from, but no agreements were reached. In some cases, it would have been difficult to determine which country to return them to, the team noted in their paper.

An Early Bronze Age metalworker and shaman discovered over 200 years ago in a lavish burial near Stonehenge and long assumed to be male was actually female, a new genetic analysis reveals.

The results of the ancient DNA analysis of the "Upton Lovell Shaman," carried out by researchers at the Francis Crick Institute in London, break the previously held stereotype of Early Bronze Age women, according to a statement from the Wiltshire Museum, where the remains and grave goods are housed.

"It completely tears up previous assumptions," David Dawson, director of the Wiltshire Museum, told The Guardian. "We're so used to the assumption [that] men do everything, men are the leaders, men are the metalworkers. Here we have smoking gun evidence of a female metalworker. And metalworking was the space science of its day."

The nearly 4,000-year-old burial was unearthed in 1801 near the village of Upton Lovell, about 10 miles (16 kilometers) west of Stonehenge. The human remains were surrounded by an unusually rich tool kit containing stone axes, metalworking implements with traces of gold on them, a touchstone for testing metal purity by comparing streaks left by different metals, and pierced animal bones that were likely once sewn onto a garment as decorations, hinting at a ceremonial cloak.

The mix of high-status metalworking tools and objects thought to have ritual significance led archaeologists to interpret the individual as a spiritual specialist, earning the remains the nickname, the "Upton Lovell Shaman."

William Cunnington, the English archaeologist who excavated the burial mound, known as a barrow, noted at the time that, "from the largeness of the bones," the burial "appeared to be a stout man," according to the statement. For the next two centuries, the individual's assumed sex was male, with its museum display depicting a bearded male figure.

The DNA analysis was originally intended to trace the individual's ancestry, but the results showed sex chromosomes of XX, instead of XY, catching the researchers off guard. To be certain, the team tested DNA from a tooth and a toe — and got the same answer each time, with no evidence that the grave held more than one person, according to the statement.

Other clues in the skeleton revealed more details about the individual. She stood around 5 feet, 4 inches (165 centimeters), which was unusually tall for a Bronze Age woman, and died at about age 45. She was robustly built, with arthritis in her right wrist but not her left ‪—‬ a pattern that fits years of the repetitive work with metalworking tools, the statement reported.

A 2022 study found that the individual was likely a skilled goldsmith who fashioned gold ornaments. This ability may have seemed magical during the Bronze Age, Susan Greaney, an archaeologist at the University of Exeter who wasn't involved in the study, told Live Science at the time.

"The ability to transform other objects by the delicate and skilled process of covering them with gold sheet may have been seen as a magical or ritual process, a secret method known only to a few people," Greaney said in a 2022 email. "This research shows how metalworking was closely related to magical, ritual and religious beliefs."

This is not the first time an ancient elite individual has been mistakenly identified as male. For instance, an elite person from Sweden's Viking Age who was buried with weapons and strategy games was thought to be male but was later verified to be female, and a high-ranking individual from Copper Age Spain was thought to be male until a DNA analysis showed they were female.

"We now have a whole new understanding of this burial, rewriting their story, breaking stereotypes, and putting women front and centre in our understanding of early Bronze Age society," Lisa Brown, curator of the Wiltshire Museum, said in the statement.

The findings will be unveiled Thursday (July 16) in a new exhibition on ancient DNA, "We Go Way Back," opening at the Francis Crick Institute.

A large pit discovered by an amateur astronomer on Google Maps in 2024 is actually a 390 million-year-old meteor impact crater, scientists have confirmed.

Joël Lapointe was planning a camping trail through Quebec's Côte-Nord region when he stumbled upon a large indentation in the terrain, CBC reported at the time. The pit, centered around Lake Marsal, was about 25 kilometers (15.5 miles) in diameter and a near-perfect ring — it didn't seem like a normal ditch. Lapointe eventually got in touch with French geophysicist Pierre Rochette, who said that the surrounding topography was "very suggestive" of an impact crater.

Initial testing of samples retrieved from the site contained a mineral called zircon often formed during meteor impacts. However, zircon's presence alone was not enough to prove the crater's extraterrestrial origin story. So a team of scientists had visited the pit in person.

"One of the key things we look for is evidence for shock metamorphism, which can only occur due to the immense pressures created by asteroid or cometary impacts — or nuclear explosions," Gordon Osinski, a professor of planetary geology at Western University, told Live Science in an email. "Most of these features are microscopic, so you can only confirm in the lab with samples."

But there is one feature Osinski said can be seen with the naked eye: grooves or lines in the rock's surface called shatter cones, which are caused by shockwaves passing through the ground.

In October 2025, Osinski and a team of geologists visited the site to investigate whether any of these features were present. "This was one of the most arduous expeditions I’ve ever done — and I’ve done 25 expeditions to the Arctic and 6 continents," he said. "The terrain was incredibly rough and rugged, plus [there were] lots of bugs."

But they eventually found what they were looking for — shatter cones. They also discovered big cliffs of impact melt rock, created by the intense temperatures and pressures produced by a meteor impact. "You can melt literally tens of cubic kilometres of the Earth's crust when you get a big enough asteroid hitting," Osinski told CBC.

Taking samples from the rocks, the team dated the crater at 390 million years old.

Osinski, who runs a website called Impact Earth dedicated to verifying meteor impact sites, is used to getting emails about strange looking satellite images. "I get lots of messages from the public thinking they have found a crater and 99/100 turn out not to be the case," he told Live Science. "This is one of those rare examples that shows this is possible."

So far, we know of roughly 200 impact craters on Earth, 31 of which have been found in Canada. "Typically about 1 or 2 craters are discovered per year, but these are typically less than 5-10 km [3 to 6 miles] in size," Osinski said. "[A crater of this size] is pretty rare."

The last meteor crater confirmed in Canada was in 2010.

After the new investigation confirmed the pit was punched out by a meteor impact, Osinski, Rochette and their team named it Uhaachatik Crater following discussions with the Ekuanitshit Innu council, a council representing the indigenous people in the area. The researchers will present their work at the Annual Meeting of the Meteorological Society in Germany next month.

Speaking to Radio-Canada, Lapointe said that he was very happy to hear his discovery had been confirmed as a genuine meteor crater. "It's not every day that an ordinary citizen finds a 390-million-year-old crater," he said. “I encourage everyone to not ignore intuition or an observation, even if it isn’t part of your field of expertise.”

Osinski and the team will continue their work on the collected samples to learn more about the impact site. "Any crater discovered offers us insight into how craters form and the effects that they can have on Earth’s geology, biology, and climate," he told Live Science.

The massive hardware demands of artificial intelligence (AI) applications are stretching the physical and structural limitations of semiconductors. But researchers have engineered a three-dimensional silicon chip that they propose as the solution.

In a new study published May 27 in the journal Nature, scientists found a way to cram more computing power into a chip by stacking silicon circuits in multiple layers in a way that doesn't impact performance.

Stacking chips vertically, known as 3D integration, is more efficient than traditional 2D chips, where silicon circuits are spread across a single surface. This is because stacking shortens the distance that data has to travel and reduces the power required for data transmission.

The researchers' 3D chip uses ultrathin silicon membranes and low-temperature manufacturing techniques to overcome the challenges of current chip architectures.

"Our method is not only easier to implement with lower cost, but it has several advantages over previous approaches to stack silicon wafers," Qing Cao, first author of the study and a materials science and engineering professor at the University of Illinois Urbana-Champaign, said in a statement.

Extending Moore's law

Since the 1960s, ensuring that electronics can handle more demanding applications has meant making transistors smaller so more can be packed onto a single chip. But, as Cao pointed out, doubling the number of transistors every couple of years — a principle known as Moore's law — is becoming less feasible.

"If you look at the actual size of transistors, they're not getting smaller, especially in terms of their contacted gate pitch," Cao said in the statement — defined as the combined width of one transistor gate and the space needed to separate it from the next.

"This is because we're becoming limited by the intrinsic material properties of silicon and the fundamental rules of quantum mechanics. If we're going to keep up the trend of increasing processing power of our microprocessors, we have to start thinking beyond just squeezing more devices on a single surface."

The researchers think vertical integration across multiple layers is the best way to guarantee that engineers can continue to adhere to Moore's law, because this approach creates room for more transistors on a chip.

"Today it takes six microelectronic devices called transistors on a single plane to store one bit of information," Cao explained, suggesting that just like in a densely populated city, the only way to solve overcrowding is to build upward. "You get the same functionality, but the spatial footprint is reduced while making communication between layers faster and more efficient."

Getting around the heat problem

Stacking is nothing new, of course, but vertical integration — building layers directly on top of one another — can create thermally dense packages. In the study, the researchers noted that the fabrication of high-quality silicon chips demands temperatures up to 1,832 degrees Fahrenheit (1,000 degrees Celsius).

However, once the first chip layer has been completed, the metal wiring introduced to connect further layers can be destroyed by such high temperatures. As a result, the "thermal budget" — the maximum amount of heat that can be endured before degradation starts to occur — for any additional layers is 752 F (400 C), said Cao. This can result in performance and reliability issues.

When creating 3D stacked silicon chips, manufacturers have sought to avoid this problem by using alternatives to single-crystalline silicon for the upper layers, according to the researchers. These materials include amorphous and nanocrystalline metal oxides, carbon nanotubes and polycrystalline silicon, but they can lead to performance and reliability issues, the scientists said in the study.

To overcome this challenge, Cao and his team adopted an approach called "monolithic integration" — a process in which all chip components are fabricated on a single piece of substrate, as opposed to making them separately and then bonding them together later.

To build each chip, the researchers created ultrathin silicon nanomembranes that they then transferred, using a roll laminator, onto a substrate containing the bottom layer.

The maximum temperature required to generate a strong bond using this method was just 392 F (200 C) — five times less than the heat normally required. The membranes they transferred were also just 10 nanometers thick or less — about the size of a protein — compared with the approximately 500-to-700-micrometer (500,000 to 700,000 nanometers) thickness of a typical wafer. Because they are thin, these membranes are mechanically flexible to conform to the underlying surface, Cao added.

The result of this process was a 3D chip with three layers, each containing 625 transistors. This pales in comparison to the billions of transistors that can be crammed onto chips already on the market, but the researchers believe their technology boasts power efficiency benefits. The electrical current that can flow through the chip has proved to be at least three to four times greater than that of monolithic chips made from alternative materials.

The big question is whether their 3D silicon chip can make the leap from the laboratory to commercial applications. While the research demonstrates the potential of a chip comprising three stacked layers, the scientists suggested that plenty more layers can be added in future iterations.

Can you match these ancient devices to their pictures? Find out with our computing quiz!

On July 14, 2026, "Gus," one of the most complete specimens of Tyrannosaurus rex, went to an as yet unidentified buyer for US$50.1 million. This auction at Sotheby's set a record for most valuable fossil ever sold. Another dinosaur has entered the luxury collectibles market, a reminder that even Earth's deepest history can be sold to the highest bidder.

To paleontologists like me, however, a fossil like "Gus" — excavated from the Hell Creek Formation in South Dakota over three years starting in 2021 by commercial collector Thomas Heitkamp and his team — is not a trophy or a work of art. It is an irreplaceable scientific archive. Fossils preserve evidence of evolution, extinction, growth, disease, injury and ancient ecosystems. They are finite, nonsubstitutable records of life’s history on Earth.

Science depends on independent verification of claims and healthy debate. Researchers must be able to revisit specimens, test earlier conclusions and ask new questions.

But once a scientifically important fossil enters a private collection, access for researchers is no longer guaranteed. Collectors typically sequester their fossils in their homes. Even when privately owned specimens are loaned to museums, the owners can change their minds, ending access at any time. This issue is especially of note when it comes to Tyrannosaurus rex; a 2025 study found that while there were 61 T. rex fossils in public trusts at that time, 71 were privately held.

That is why the Society of Vertebrate Paleontology, of which I'm a long-term member and president-elect, has long argued that scientifically significant vertebrate fossils belong in the public trust, curated in museums and universities that preserve them permanently, make them available for research and share them with the public.

Finding a fossil

Supporters of commercial fossil sales often argue that without sales to private collectors, specimens like "Gus" would remain buried or erode away. They’re right about one thing: Discovery matters. Many extraordinary fossils have been found by ranchers, hikers, amateur collectors and commercial excavators. Paleontology is accessible to everyone who has an eye for observing nature — you don't need to be an expert with academic credentials to make an important discovery.

But discovery is only the beginning. A fossil's scientific value depends on careful documentation of where it was found, the rocks surrounding it, and the plants and animals preserved alongside it. Those details allow scientists to reconstruct ancient ecosystems, understand how an animal lived and died, and interpret how its remains became fossilized. When that contextual information is incomplete or lost, much of the fossil's scientific value is lost as well.

Yet even discovery, excavation and publication barely scratch the surface of a fossil's scientific importance. The greatest scientific value of a specimen often comes decades later, when researchers ask new questions and apply new technologies that earlier generations never imagined. A specimen that seems fully studied today may yield surprising new information tomorrow, but only if it is still available for study.

Delayed discoveries

Consider the iconic dinosaurs, including T. rex, Triceratops, Diplodocus and Stegosaurus, first collected more than a century ago. Early paleontologists could describe their shapes but had no way to dig deeper by peering inside the bones. Because those specimens were preserved in museum collections, later generations could revisit them with technologies that didn't exist when they were discovered.

Paleontologist Larry Witmer and his collaborators at Ohio University started using CT imaging 20 years ago to reconstruct the internal anatomy of historic dinosaur fossils without damaging them, based on how X-rays travel through specimens. Brain cavities, inner ears, air spaces, nerves and blood vessels became visible for the first time, revealing how dinosaurs balanced, heard, smelled and perceived their world.

Henry Fricke, Thomas Cullen and other geochemists have used isotopic signatures preserved in fossil teeth and eggshells to reconstruct dinosaur diets, migration patterns and body temperatures. This research has revealed how dinosaurs lived: what they ate, how they moved through ancient landscapes, and even how warm their bodies were.

More recently, molecular paleontologist Jasmina Wiemann and her collaborators have identified chemical traces preserved in fossil bone, eggshell and skin that reveal aspects of dinosaur biology unimaginable even a generation ago. Until now, paleontologists had no way to know details about metabolic rates and reproduction or the colors of skin, feathers and eggs.

In my own research I use microscopes to uncover the hidden stories preserved inside dinosaur bones and teeth. Thin sections of fossil bones reveal that dinosaurs grew more like mammals and birds than like oversized reptiles. Microscopic modifications to bones capture traces of ancient scavenging, and tiny signatures deep inside baby dinosaur bones indicate the moment of hatching.

None of these discoveries would have been possible if the original fossils had vanished into inaccessible private collections.

Shared natural heritage, on the auction block

Fossils are not static objects whose scientific value is exhausted once they are described. Their value grows as science advances, but only if future researchers can continue to examine the original specimens.

Of course, sometimes dinosaur fossils are rescued from obscurity through purchase and immediate deposition or donation to natural history museums. Some of the world's most important dinosaur fossils are accessible today because individuals, companies or organizations with the means to acquire extraordinary specimens recognized that they belong where scientists can continue to study them and where future generations can learn from them.

Purchasing a fossil in order to place it permanently in the public trust is fundamentally different from acquiring it as a private collectible: One expands access, the other leaves access uncertain.

But as fossil prices rise into the millions, museums increasingly cannot compete. The most significant fossils are no longer reliably entering public collections. Instead, they are becoming luxury assets whose market value supersedes their scientific value.

Dinosaurs belong to our shared natural heritage. They inspire wonder because they connect all of us to a world unimaginably older than our own. For me, the question raised by auctions like the one on July 14 of "Gus" is not who can afford to own these relics of the past. It is whether future generations have the chance to study and learn from them.

This edited article is republished from The Conversation under a Creative Commons license. Read the original article.

How much do you know about the king of the dinosaurs? Test your knowledge with our T. rex quiz!

A four-legged robot has learned to change the way it runs while navigating forests, staircases and obstacle courses. — seamlessly switching between a steady trot and a faster bounding gait without instructions from a human operator.

The 100-pound (45 kilograms) robot, called KAIST HOUND, uses cameras and lidar to scan the ground ahead, then selects an appropriate gait and adjusts its movements in real time. In outdoor tests, it crossed a 0.7-mile (1.1- kilometers) university campus route and a 0.2-mile (0.3 km) forest trail strewn with roots, logs and slippery leaves.

The researchers described the robotic framework on July 15 in the journal Science Robotics.

Changing gait

Animals naturally change their gait depending on their speed and surroundings. A dog might trot carefully across uneven ground, for example, before bounding over a fallen branch. Reproducing this adaptability in robots is tricky because different movements are often controlled by separate, highly specialized coding systems, and transitions between them can cause a lag that drives the robot to stumble.

To overcome this issue, researchers developed a special training framework called action pretrained transformer–based reinforcement learning (APT-RL). This is an artificial intelligence (AI) training system that first studies many examples of actions, uses a transformer to understand patterns across those actions, and then improves through rewards and penalties.

The training began with a simple, two-dimensional computer model of the robot. Using trajectory optimization — a technique that calculates physically workable movements for the robot — the team generated 180,000 short trotting and bounding sequences, including the joint forces the robot's legs need to perform. The dataset represented about 15.5 hours of movement but took only around eight minutes to produce.

During reinforcement learning — a machine learning technique where AI learns to make the best decisions by engaging with a particular environment through trial and error — an AI system then learned how to select and modify those skills while negotiating simulated stairs, stepping stones, hurdles, gaps and rough ground.

In digital simulations, the robot dog was not limited to copying its prerecorded movements. It could also make corrections for three-dimensional terrain and unexpected situations, such as jumping over a log — a behavior that wasn't included in the original, flat-ground training data.

Finally, the researchers configured the system to include the robot's depth camera and lidar scanner in the simulation.

In one indoor test, HOUND bounded across an obstacle 2 feet (60 centimeters) high while briefly achieving 9.5 mph (15 km/h). It also jumped down a three-step staircase. The robot generally chose trotting at lower speeds on irregular ground, while bounding became more common at higher speeds or when it encountered larger steps, hurdles or gaps. The AI system that could select either gait performed more consistently across the different simulated environments than the version restricted to trotting or bounding alone.

The researchers suggest the technology could eventually help robots navigate disaster zones or other places inaccessible for wheeled machines. However, the current framework only allows two gait choices and mainly handles forward movement. Rapid turning, sideways motion and other behaviors like crawling remain future goals for the research team.

Scientists have identified a new species of monkey that has orange lips and makes unique roars and snorting sounds. The distinctive monkey lives in a remote region of the Democratic Republic of the Congo (DRC).

It is only the fifth new monkey species to be identified in Africa in the past 75 years, and there might be more unknown monkey species in the region, scientists behind a new study suggested. Researchers named the newly identified species of monkey Colobus congoensis, after the region, and it is known by the common name "lik­weli" in the local Kilanga language.

"This is remarkable because it's not very common these days to find a new, never-before-documented primate species, let alone a relatively large species of monkey," said Joshua Linder, an anthropologist and president and co-founder of the The Forest Collective, a nonprofit that aims to conserve and restore tropical rainforests.

In 2008, conservationists in the dense rainforests of Lomami National Park, within the Congo Basin in the DRC, photographed an unidentified monkey, but it was partially obscured. Then, in 2018 a similar-looking animal was captured on camera, prompting study co-author Junior Amboko, a Lomami National Park researcher and a Florida Atlantic University anthropologist, to set out to find the mysterious monkey.

To see what was already known, Amboko and his colleagues showed the pictures to people from 52 villages around the park.

"These people really know the fauna and flora in the forest," Amboko told Live Science. "In only eight villages, people knew the monkey ‪—‬ and these were hunters, who know the economic value of animals or how much food each animal can provide, but even they didn't know much."

Hunters of the Balanga ethnic group called the monkey "likweli," although the meaning of this name isn't known. Some in the Mituku local communities called the species "kasaba nkoni," which Amboko said means "the branch shaker." This refers to the way colobus monkeys leap from branch to branch, Amboko said.

In their searches between 2018 and 2022, the researchers recorded 114 sightings of the species across an estimated range of about 660 square miles (1,700 square kilometers) naturally isolated between the Lomami and Lualaba rivers. They reported their findings July 15 in the journal PLOS One.

The monkeys, seen hanging out in groups of between one and 20 individuals, are mainly glossy black, but they have a conspicuous orange patch around the mouth and nose. Bare gray skin on their cheekbones makes it look as if they're wearing masks. They also have a patch of white fur around the anus.

"We're going with the face and the rump as the two distinctive traits," said study co-author Kate Detwiler, an anthropologist at Florida Atlantic University. "If you see the face, you see this unique bare skin that's orange cream. And then if you're coming from behind, you see this white patch."

The monkeys, which weigh about 15 pounds (7 kilograms), also make deep, loud roars, punctuated by distinctive snorts. These unique‬ vocalizations distinguish them from other colobus monkeys, Detwiler told Live Science.

By taking samples, and sequencing DNA, from monkeys killed by hunters and destined for the illegal bushmeat trade, and comparing the results with what’s in museum collections and datasets of genetics, skulls, teeth and pelts for other colobus monkeys, the team confirmed that C. congoensis was a previously unknown species.

"My lab got the tissue sample and did the genetics, and we were shocked by how divergent the key area of the mitochondrial genome was from other colobus monkeys," Detwiler said.

The monkeys live in the same forest as the Angola colobus (Colobus angolensis), but their closest relatives are black colobus monkeys (Colobus satanas), which live around 750 miles (1,200 kilometers) to the west, in Cameroon, Gabon and Bioko Island.

"The fact that the results show that the closest living relative to this new species is the black colobus located 1200 km away in West Africa is equally remarkable," Linder, who was not involved in the new study, told Live Science via email.

Detwiler estimates that these close relatives diverged between 5.78 million and 3.44 million years ago ‪—‬ the longest known split between species within the Colobus genus. "The discovery is reshaping our understanding of African monkey evolution," she said.

Given the small geographic range, rare sightings and increasing habitat loss, the researchers recommend that C. congoensis be classified as endangered on the IUCN Red List.

The discovery also emphasizes the importance of Lomami National Park, where another previously undescribed monkey, the lesula (Cercopithecus lomamiensis), was reported in 2012 by a team that included Detwiler.

The Congolian rainforest ranging across this part of Africa is the world's second-largest tropical forest, after the Amazon, and about 60% of it is in the DRC. "It is a paradise for biodiversity," Amboko said, adding that there might be more undescribed primate species there. "If we are able to discover two big new primate species, who knows how many other new mammals, fish, reptiles or plants there could be?"

What do you know about chimpanzees and great apes? Test your smarts with our primate quiz!

Physicists have coaxed a black hole's most famous glow out of a strand of optical fiber and, for the first time, watched that light react back on the simulated black hole that produced it.

The result gives researchers a rare, hands-on look at Hawking radiation ‪—‬ the faint thermal emission that Stephen Hawking predicted should leak out of black holes ‪—‬ and offers a first clue about the tiny push that could, in principle, make a real black hole slowly evaporate, the research team said in a new study.

Working with a tabletop experiment in optical fibers, the international team detected both the radiation and its long-sought "back reaction" — the way the radiation feeds energy back and reshapes the object that created it.

According to the new study, published July 1 in the journal Nature, the light behaved exactly as Hawking predicted it should: like the glow of a warm object, with a definite temperature and a spectrum that fades away steadily toward higher frequencies. It did so even in a regime where the usual textbook description of a black hole should break down.

Where three great theories collide

Hawking radiation is famous because it sits at the crossroads of physics' biggest ideas.

"Jacob Bekenstein predicted that black holes have an entropy and a temperature, and Hawking calculated the thermal radiation of the black hole," study co-author Ulf Leonhardt, a physicist at the Weizmann Institute of Science in Israel, told Live Science via email. "In Hawking-Bekenstein radiation, quantum physics, general relativity and thermodynamics come together — subjects that are normally in conflict with each other."

The conflict runs deep: General relativity pictures space and time as smooth and continuous, while quantum mechanics describes a world of discrete, unpredictable jumps ‪—‬ and no one has managed to fully reconcile the two.

That combination is exactly what makes Hawking radiation so hard to study. Astronomers have never seen Hawking radiation from a real black hole and probably never will; the glow is far too faint to pick out across the cosmos. So physicists have turned to laboratory stand-ins that obey the same equations, building black hole analogues out of flowing water, ultracold atoms and, as in this study, light.

Building a black hole from light

The trick behind every black hole analogue is a moving medium. "Imagine a swimmer in the sea with a current faster than he can swim," Leonhardt explained. "He is swept away. This is what happens beyond the [event] horizon, and this is why normally nothing can escape the black hole."

A black hole's event horizon is the boundary where that current — space itself, in real life — starts moving faster than anything can travel. To recreate it, the team needed a material that appears to rush along at the speed of light. Their solution was elegant: use light to make the "material."

"In optics we need a material that appears to move at the speed of light," Leonhardt said. "For this we use light itself — in nonlinear optics, light acts like a material."

In practice, the researchers fired an intense, ultrashort "pump" pulse into a thin photonic-crystal fiber — a strand of glass threaded with a pattern of tiny air channels running along its length, which lets researchers fine-tune how light moves through it. As it traveled, the pulse slightly changed how the glass bent light, creating a moving speed bump that raced along with it. A second, much weaker "probe" pulse then ran into this moving front. Where the probe could no longer keep up, an artificial horizon formed — and the black hole analogue was born.

Catching the glow and its pushback

The payoff came in the ultraviolet. According to theory, Hawking radiation is created in pairs: One partner escapes, while the other, carrying "negative" energy, is the mirror image that would fall into a real black hole. In the fiber, that partner showed up as ultraviolet light.

"We counted photons in the ultraviolet that correspond to the Hawking partners beyond the horizon," Leonhardt explained. "They have a wavelength around 233 nanometers. This was our signal."

Just as important as seeing the glow was understanding how it was made. For years, researchers assumed the fiber built up its Hawking radiation through a cascade — a chain of separate steps in which the light is converted first into one intermediate form, and then another, each feeding the next before the radiation finally emerges. The team found that, instead, a single, direct interaction does the job, with the pump and probe light producing the Hawking pair in one clean step. It is a much simpler picture that the researchers said may carry over to other analogues and perhaps even to real black holes.

Because energy has to come from somewhere, making Hawking radiation should nudge the source that created it. For a real black hole, that nudge is how it loses mass and, over unimaginable timescales, evaporates entirely — the process Hawking described in his landmark 1974 paper. No experiment had ever captured that recoil.

Here, the team saw it. Producing the radiation shifted a small fraction of the pump pulse's own light to a slightly different color, leaving a telltale lopsided pattern in the spectrum. That asymmetry, absent in earlier experiments, is the fingerprint of the back reaction, or recoil — the black hole analogue quietly paying the energetic price for its own glow.

The road to a quantum experiment

The result also speaks to one of the thorniest puzzles in black hole physics: the trans-Planckian problem. Trace Hawking's radiation back to where it was born and the calculation runs into territory no physicist can vouch for — the Planck scale, the vanishingly small size at which space and time are thought to lose their familiar meaning and all known physics gives out. Hawking's prediction, in other words, appears to rest on a foundation that may not exist.

"Any light getting away from the horizon is stretched out enormously," Leonhardt said. "So it must come from waves smaller than the tiniest scale in nature, where the physics is unknown. Would that still give Hawking radiation? That was the question, and we have answered it in our experiment." Remarkably, the glow stayed perfectly thermal even in this extreme regime.

The team's next step is concrete. So far, they have used ordinary laser light, which reproduces the spectrum of Hawking radiation but not its deepest quantum weirdness. Next, the team plans to "go quantum," Leonhardt said. "We will explore how to get into the quantum regime and observe quantum features such as entanglement" — the ghostly link that should tie each escaping Hawking particle to its lost partner.

See how much you know about black holes with our black hole quiz!

When it comes to the "silly money" category of lenses, they are typically those ridiculously long prime lenses that make your arms ache just by looking at them. They provide incredible image quality but lack the versatility of a zoom. Enter the Canon RF 100-300mm f/2.8L IS USM: With a constant f/2.8 aperture throughout the entire 100-300mm focal range, this lens is a serious contender for wildlife pros and sports photographers.

Of course, at an eye-watering $10,500, it's not for everyone. It's not even for "many people"; it's for a select few who either have serious money lying around or make serious money from photography, where a lens of this caliber would be a sensible investment. Still, we took it for a test drive to see just how much better the performance is compared to the more reasonably priced wildlife zoom lenses.

Canon RF 100-300mm f/2.8L IS USM: Design

• Weight is surprisingly manageable
• Internal zoom
• Solid and sturdy build quality

Although its weight is comparable to that of the much cheaper SIGMA 60-600mm Sport lens we tested recently, this lens from Canon is actually the lightest f/2.8 300mm lens on the market. And because the zoom is internal, the weight distribution feels much more manageable in the smaller package than it does on a lens that extends. (But that’s not to say our arms weren’t aching the following day).

It's also dust- and weather-resistant, which we’d expect on a lens that's this expensive. It's solid and sturdy with a plethora of lens coatings to eliminate glare and ghosting, and it feels every bit the professional-grade Canon L lens you would want.

It comes with plenty of buttons and switches on the barrel, including the standard AF/MF switch, focus limiter and IS on/off. It has another switch to choose between three stabilization modes (mode 1 for static subjects, mode 2 for panning and mode 3 for tracking erratic moving subjects).

The final switch is a focus preset button, which enables you to pre-focus on a certain spot where you expect the action to be, then switch back and forth as you're shooting. Alternatively, you can set this switch to L-Fn to utilize it as a programmable function button instead.

This lens isn't expensive because it introduces any revolutionary build features. It's expensive because Canon has combined every premium design element — internal zoom, magnesium construction, professional weather sealing, compact packaging and meticulous engineering into a lens that is designed to meet the needs of professional photographers.

Canon RF 100-300mm f/2.8L IS USM: Performance

• Outstanding image quality
• Basically no image defects
• Beautiful bokeh

Image quality is, unsurprisingly, absolutely beautiful. The shots we took are razor-sharp and clean with basically no defects whatsoever. There's a tiny bit of distortion, which is easily corrected in Lightroom (and wouldn't be detectable unless you were directly comparing the before/afters), but the images have no chromatic aberration or vignetting at all.

This lens shows every strand of fur or feather and effortlessly captures the moment perfectly every time. The bokeh is soft and creamy thanks to the constant f/2.8 aperture, which beautifully isolates the subject and blurs out distracting background elements.

We took images at f/2.8, f/4, f/5.6, f/8 and f/11 at 100mm, 200mm and 300mm to see how the lens performs across a variety of settings. Looking at the center portion of our test chart shots, the sharpest images are f/5.6 at 100mm, f/2.8 at 200mm and f/2.8 at 300mm. At 100mm, our f/2.8, f/4 and f/5.6 shots were all of similar quality in terms of central sharpness, but f/5.6 has the edge when it comes to contrast.

Those same three apertures were also very similar at 200mm, but in this instance, f/2.8 has the edge. At 300mm, there was a significant drop in contrast between f/2.8 and f/4, but both images were of similar sharpness. Unsurprisingly, the corners were sharpest towards the f/8 range, but wildlife photography rarely ever calls for sharpness across the entire frame, so the softer corners at f/2.8 - f/5.6 aren't a dealbreaker.

Canon RF 100-300mm f/2.8L IS USM: Functionality

• Constant f/2.8 aperture throughout the whole zoom range
• 5.5 stops of image stabilization
• Versatile focal length and teleconverter compatibility

A big selling point with this type of lens is the constant f/2.8 aperture throughout the entire focal range — and this is a common feature with many lenses at this price range. The wide aperture allows for faster shutter speeds, which is ideal for capturing sharp images of fast-moving wildlife or sports photography, and the wide aperture also increases light intake in low-light situations, like photographing animals at dawn or dusk or indoor sports.

Although the 100-300mm focal length wouldn't be the best choice for photographing small birds or distant subjects, it provides a good focal range to cover many other types of wildlife, like equine or safari photography, as well as a variety of indoor sports. While it's not the biggest zoom range on offer, it eliminates the need to switch between lenses while on a shoot.

This, in turn, means faster reactions to changing scenes, less chance of missing shots when the subject moves unexpectedly and better protection from dust and rain due to less swapping. Plus, when paired with the Canon 1.4x teleconverter, this lens becomes a 140-420mm f/4, and a 200-600mm f/5.6 with the 2x extender, opening up the possibilities even further.

With the lens's 5.5 stops of image stabilization (which increases to 6 stops when paired with EOS R cameras with IBIS), this lens has no trouble following fast-moving subjects smoothly and efficiently — which is useful for both image quality and viewfinder steadiness.

Should you buy the Canon RF 100-300mm f/2.8L IS USM?

It feels counterintuitive to give this lens 5 stars but say "no, don't buy it," and it's not that we're saying "don't buy it," but as good as this lens is, it's quite niche, and we are finding it hard to justify the price compared to other setups from Canon.

Currently, this lens is the only way to get 300mm at f/2.8 (unless you get a used EF 300mm f/2.8L IS II USM and an EF-EOS R adapter), so unless you really need to shoot between 200-300mm at f/2.8 and have the money to do so, there are more sensible options that either save money or give you more value.

For example, you could buy an R1 and a used EF 300mm f/2.8L lens with an adapter for around the same price as this 100-300mm lens. And if you find good deals, you could even add the Canon RF 70-200mm f/2.8L IS II USM to that lineup with a teleconverter. The only advantage the 100-300mm would then have is that you wouldn't need to change lenses — but is that worth such a steep price?

If this lens isn't for you

The patient: A 14-year-old boy in the United Kingdom

The symptoms: The teen was brought to his family's general practitioner because he felt unusually tired. His doctor asked about the boy's eating habits and described him as a "fussy eater" in notes from the appointment. The doctor also indicated that the teen had no symptoms other than tiredness, according to a report of the case.

Tests revealed that the teen had mild anemia and low levels of vitamin B12, which comes from a person's diet because the body does not produce it. The body needs vitamin B12 for maintaining the health of red blood cells and the nervous system. The teen's doctor provided dietary advice and prescribed supplementary B12 injections.

What happened next: Later, at age 15, the teen began developing problems with his sight. An eye exam detected no abnormalities, and the ophthalmologist was unable to determine the cause of the vision loss, which worsened over time. When the patient was 17 years old, his general practitioner referred him to a neuro-ophthalmologist for further testing. (Neuro-ophthalmologists can assess vision problems related to the nervous system.)

Additional vision tests showed that the patient's visual acuity — a measurement of a person's ability to accurately see details from certain distances — was 20/200 in both eyes. In other words, objects that would be visible to a person with normal (20/20) vision at a distance of 200 feet were not clearly visible to him beyond a distance of 20 feet. Vision of 20/200 or lower falls within the parameters of legal blindness, according to the American Foundation for the Blind.

When asked, the patient denied using drugs, alcohol or tobacco, and his eyes showed no signs of disease, nor were they scarred or injured. The results of a neurological exam were normal.

However, blood tests showed that his red blood cells were enlarged, which can suggest vitamin deficiencies. His blood levels of copper and vitamin D were lower than normal. Furthermore, elevated concentrations of the amino acid homocysteine and methylmalonic acid — compounds that B12 helps to break down — further hinted that he was deficient in the vitamin, as at earlier examinations.

The diagnosis: The patient admitted that he was no longer taking the recommended B12 injections. (The case report did not indicate exactly when he had stopped.) His body mass index (BMI) was normal, and he was of average weight for his height. But because his B12 levels were low, the doctors questioned him about his diet.

He replied that he could not tolerate certain food textures; as a result, since elementary school, he had avoided most foods. For years, his daily diet consisted of fast-food french fries, white bread, potato chips, sausages and processed ham.

This diet lacked vital nutrients, leading to a condition called nutritional optic neuropathy, a rare type of vision loss that is often caused by severe deficits in B12 and other B vitamins. It causes atrophy of the optic nerve, which relays information from the eye to the parts of the brain that process vision. Copper deficiencies have also been linked to this type of optic neuropathy and to enlarged red blood cells, according to the report's authors.

The treatment: The doctors prescribed the teen supplements to correct his nutritional deficiencies and referred him to mental health services to treat his food aversions, which the doctors identified as a type of eating disorder.

Following treatment, the patient's vision did not deteriorate further. However, there was no improvement in his sight. Nutritional optic neuropathy may be reversed when caught early, but if the optic nerve becomes atrophied, the vision loss is permanent, the physicians explained in the report.

What makes the case unique: Nutritional optic neuropathy is rarely caused by dietary deficiencies alone. Historically, cases in the medical literature have generally been associated with malnutrition caused by war and famine. More recent cases have usually involved both nutritional deficits and smoking or abuse of alcohol or drugs.

In some instances, this type of neuropathy results from inflammatory bowel disease or bariatric surgery, which limit the body's absorption of certain nutrients. It can also stem from restrictive diets that are not adequately supplemented with missing vitamins and minerals.

The teen's case is also unusual because his normal BMI masked the vitamin deficiencies that caused his blindness. In other words, doctors may have overlooked his dietary deficits because his weight was within a normal range.

Moving forward, "nutritional optic neuropathy should be considered in any patient with unexplained vision symptoms and poor diet, regardless of BMI," the authors wrote in the report.

For more intriguing medical cases, check out our Diagnostic Dilemma archives.

This article is for informational purposes only and is not meant to offer medical advice.

Can you guess the diagnosis in these strange medical cases? Find out with our diagnostic dilemma quiz!

The use of nicotine pouches is increasing among teenagers and young adults in the U.S. As researchers who study nicotine use among young people and develop strategies to prevent it, we worry these discreet products might be driving a new public health crisis. It may be that more and more teens are becoming addicted to nicotine pouches under our watch.

To stop that crisis in its tracks, we need to act now. Myriad strategies would help, including eliminating flavored pouches and reducing the amount of nicotine in the products, as well as regulating their marketing and stopping companies from making deceptive claims. And while we await such regulation, informing educators, parents and teens about the harms of nicotine pouches will be key.

Why worry now? Nicotine pouches — small, pillow-like products that users place between their gum and lip — are now the second most used tobacco product among U.S. adolescents. In a recent survey, 2.3% of high school and about 1% of middle school students, an estimated 460,000 students total, reported using a pouch in the past month. More than 9 in 10 pouch users opted for flavored pouches, with mint being the most popular.

While rates of pouch use remain behind e-cigarette use, more students reported using pouches than cigarettes, cigars, smokeless tobacco or any other form of nicotine. Nicotine pouches were the only product whose use increased in the survey, while the popularity of other products declined or remained stable.

What makes nicotine pouches particularly tricky is how invisible they are to the outside observer. Unlike cigarettes, they produce no smoke. Unlike e-cigs, they generate no visible aerosol. They are small and easy to conceal. That invisibility is not a coincidence; it's part of big tobacco companies' intentional design. An adolescent can use nicotine pouches during class and no one around them would know.

Each pouch contains nicotine powder that is either derived from tobacco plants or synthetically produced, as well as other ingredients like acidity regulators and flavorings. Those flavors can be dessert-like, fruity, minty, and reminiscent of coffee or cocktails — all of which appeal to young people.

The amount of nicotine per pouch varies by brand, but generally, using one pouch is roughly equivalent to smoking one to four — or more — cigarettes. That's a problem because, although pouches don't produce smoke, nicotine is still very addictive and harmful to the developing brain.

Nicotine use can negatively affect teens' attention and impede their impulse control, hurting their academic performance and mental health. In regards to physical health, data suggest that smokeless oral nicotine products may harm some aspects of heart health and raise the risk of death in people with existing heart disease.

It may be tempting to wave away concern because the percentage of adolescents using these pouches appears relatively small. However, that would be a mistake, as doing so would mean watching history repeat itself.

Rates of e-cigarette use also started low, and by the time national data finally showed a clear increase, their use was already a deeply entrenched behavior among adolescents, with many addicted. Furthermore, national surveillance studies are, by design, snapshots in time and often lag behind what is happening in real time in classrooms and communities.

We're concerned that more teens are becoming addicted to nicotine pouches, now, and want to curb the trend. At Stanford Medicine's REACH lab, we work with thousands of schools and teachers across the U.S. every year, providing free, evidence-based tobacco prevention curriculums. We've spoken with hundreds of educators, parents and students across the country who have raised significant concerns about nicotine pouches, and presented talks to over 1,200 people on the subject.

It became clear that we must create a specific approach to prevent teens from using pouches — so, we created a course called Not So Sweet: Oral Nicotine and Smokeless Tobacco Prevention Curriculum.

The free course is designed to be used in schools or by anyone who works with teens. It explains the different types of oral nicotine and smokeless tobacco products and their many health effects, including addiction. It also lays out the marketing tactics employed by the tobacco industry to attract youth in the first place. In just a few short weeks of releasing the curriculum, we already have over 1,500 active users.

We're heartened that people are already engaging with the course, because we might already have a public health crisis on our hands.

Today's nicotine pouch market in the U.S. is dominated by three brands: the top seller, ZYN; On!; and VELO. These brands are owned by Philip Morris International, Altria, and British American Tobacco, respectively. The companies have decades of knowledge in marketing nicotine products that they are now deploying to sell nicotine pouches.

They're falling back on successful advertising tropes, telling consumers that nicotine pouches could help them socialize, unwind, or appear cool to potential romantic partners. Ads also emphasize the discreet nature of the pouches, which allows them to be used anywhere without drawing too much attention.

Through these marketing strategies, nicotine pouches have soared in popularity and sales, Zyn has become a household name, gaining nicknames like Zynnie, Zynfluence and Zyndulgence. Zyn has effectively become the "Coke" of colas, the Kleenex of tissues, the Juul of e-cigs.

What's more, the Food and Drug Administration just authorized various Zyn products to be marketed with the claim that using Zyn instead of cigarettes puts you at a lower risk of mouth cancer, heart disease, lung cancer, stroke, emphysema and chronic bronchitis. But when it comes to teenagers, we see many using Zyn or other nicotine pouches alone or alongside other nicotine products that aren't cigarettes. Unlike adult smokers who may be switching to pouches, teens may be newly introduced to nicotine addiction through products like Zyn.

It is not a matter of cigarettes versus Zyn for many teens; it is Zyn versus nothing.

Nicotine pouches might come in tantalizing flavors, but they are not sweet — they are dangerous, especially for adolescents. Reminiscent of what we've seen for decades with cigarettes and over the last decade with e-cigarettes, we once again have a nicotine product that is very appealing to and being increasingly used by young people. Yet, they contain a great deal of nicotine and are unsafe. We need to work together, now, to ensure we don't perpetuate another generation of addicted kids.

Editor's note: Bonnie Halpern-Felsher has served as an expert witness in litigation against various tobacco companies.

This article is for informational purposes only and is not meant to offer medical advice.

Opinion on Live Science gives you insight on the most important issues in science that affect you and the world around you today, written by experts and leading scientists in their field.

Researchers have extracted DNA from a 50,000-year-old tooth belonging to an African antelope, setting a record for the oldest DNA ever retrieved from sub-Saharan Africa, a new study reports.

The finding suggests that DNA preservation in sub-Saharan Africa is possible for tens of thousands of years. In most cases, the region's hot climate breaks down the molecule and prevents researchers from understanding the evolution of numerous species, including ancient human ancestors and relatives.

While some temperate regions are known for preserving ancient human DNA — for instance, the Sima de los Huesos ("Pit of Bones") in Spain preserved DNA from a mysterious relative of modern humans that lived around 400,000 years ago — the sub-Saharan African climate is less forgiving. The oldest human DNA from sub-Saharan Africa is about 18,000 years old and was discovered in bones found in a rock shelter in Tanzania. And the oldest sub-Saharan animal DNA is just 9,300 years old, from an extinct antelope in South Africa.

In the new study, researchers tested whether DNA could be successfully extracted from ancient skeletons even older than that. By analyzing more than 300 teeth from animals that lived in the past 110,000 years, they discovered that small amounts of DNA could be identified even in remains from the Late Pleistocene, the latter part of the last ice age.

In a study published online May 27 in the journal Quaternary Science Reviews, researchers extracted DNA from dozens of Holocene bovid specimens younger than 11,700 years old and from four Late Pleistocene bovid specimens between 12,000 and 50,000 years old. Although many of the teeth didn't yield DNA, a handful did. The oldest DNA the researchers found came from a partial molar from an African antelope called a mountain reedbuck (Redunca fulvorufula) discovered in Boomplaas Cave in southern South Africa. The other old DNA samples came from three extinct long-horned buffalos (Syncerus antiquus) ‪—‬ two that died 21,000 years ago and one that died 12,000 years ago.

"The 50,000-year-old DNA is exciting," study first author Deon de Jager, a paleogenomics expert at the University of Copenhagen, told Live Science in an email. "But I am myself skeptical of it, for two reasons."

The reedbuck DNA is significantly older than the next-oldest DNA the researchers retrieved, from the long-horned buffalo, de Jager explained, and the reedbuck specimen was contaminated with some human DNA, which they were able to remove. These two issues mean the 50,000-year-old antelope DNA result is not ironclad. However, since the publication of the study, the researchers have also sequenced the genome of a 42,000-year-old wildebeest from Ethiopia, suggesting DNA lasts a lot longer in Africa's climate than experts once thought.

"There is of course a limit to DNA preservation in Africa, but what it is, is not clear," de Jager said. "There are certainly parts of Africa where DNA will be preserved even better than from the sites we have surveyed. Deep caves with stable, low temperatures will certainly be good candidates, but also high-elevation sites where temperatures have been very low for a long time."

The Late Pleistocene teeth that de Jager and colleagues analyzed produced very low amounts of DNA, which is thought to have a half-life of about 521 years, meaning half of the DNA in a specimen disappears every 521 years until none is left. But the amount the researchers found is still useful, de Jager said.

The DNA is sufficient for identifying evolutionary lineages, de Jager added. If they can gather enough data, researchers might be able to compare gene flow and interbreeding among species and populations.

Although these results suggest that DNA analysis is possible for understanding the past 40,000 to 50,000 years of animal and human evolution in South Africa, we may never be able to extract DNA from ancient human relatives like Homo naledi, which went extinct around 240,000 years ago, or Paranthropus robustus, which died out around 1 million years ago.

"I think the chances of obtaining DNA from Homo naledi are very, very low, unfortunately," de Jager said. "One would have to get very lucky with an incredibly well-preserved skull with the petrous bone still present, which is the best bone for obtaining ancient DNA. To get DNA from something in Africa nearly 1 million years old would probably be impossible, as the conditions in Africa are just too harsh."

How much do you know about Earth's frosty past? Find out with our last ice age quiz!

Scientists in Australia are deep-freezing koala eggs and sperm as a "genetic backup" to save the wild population from future extinction.

The backup could be used to create healthy koala embryos through artificial insemination and in vitro fertilization (IVF), the researchers said in a statement. When koalas (Phascolarctos cinereus) die, unique traits and diverse genes that may help them adapt to changing environments are lost, but the new project offers a way to store this valuable material, the team said.

"Losing genetic diversity can weaken future generations and decreases the ability of the species to adapt to challenges," Andres Gambini, a reproductive biologist at the University of Queensland who is involved in the project, said in the statement. "This project will create a safe and systematic way to rescue and preserve koala spermatozoa and eggs to support future conservation programs."

Australia is facing a paradox with its koalas. In some regions of Queensland and New South Wales, koala populations have crashed by as much as 80% since the late 1990s due to deforestation, bushfires, drought and disease. This prompted the Australian government to change koalas' conservation status in their eastern range from "vulnerable" to "endangered" in 2022.

Meanwhile, in parts of southern Australia, koalas are overabundant. However, the places where koalas are currently thriving may not be able to support a booming population much longer, because the animals are overbrowsing and killing the trees they need to survive, recent research suggests.

To protect against koalas' decline, the scientists will freeze koala reproductive cells in liquid nitrogen (LN2), which has a boiling point of minus 321 degrees Fahrenheit (minus 196 degrees Celsius). This method would enable the team to cryopreserve the cells for several decades until they are needed, said Vincent Lynch, an evolutionary developmental biologist and associate professor of biological sciences at the University at Buffalo in New York.

"I've successfully woken cells up that were frozen in LN2 a couple of decades ago," Lynch, who is not involved in the koala project, told Live Science in an email.

The sperm and eggs will be supplied by wildlife hospitals that will harvest sex cells from dead koalas or koalas that can no longer breed due to disease or trauma, according to the statement.

"Every year, many koalas are admitted to wildlife hospitals because of illness or injury and sadly, not all of them survive," Gambini said.

The researchers will then test the cells for Chlamydia pecorum, a highly contagious and deadly form of chlamydia. In koalas, this infection causes painful urinary tract infections, gastrointestinal issues, and conjunctivitis, which can lead to blindness. It can also cause infertility in females. C. pecorum is one of the main contributors to koalas' decline in recent years, with infertility driving a sharp reduction in the number of koala joeys being born. In the worst-affected populations, situated mostly in Queensland and New South Wales, almost 90% of koalas are infected with chlamydia.

If the reproductive cells contain C. pecorum, "we have the technology now to remove the infection from the samples," Steve Johnston, an associate professor of animal reproduction and captive husbandry at the University of Queensland who works on the koala project, said in the statement.

In 1998, Johnston was part of a research team at the University of Queensland that created the world's first koala joey born through artificial insemination. The new project also builds on a 2025 study, led by Gambini, that produced the first-ever IVF kangaroo embryos. (These did not result in live births; at the time, the scientists said that would take another decade.)

It's unclear how many sperm and egg cells the researchers plan on freezing, and it's hard to say how many cells they would need to ensure the survival of healthy koala populations, as the number of cells required is probably increasing with time, Lynch said. As koala populations shrink, genetic material is being lost at an accelerating pace, so the team will have to get more samples as time goes on to obtain the same amount of diversity.

The project does not replace more traditional conservation approaches — such as habitat protection, disease management and population monitoring — but researchers cannot afford to wait until populations are smaller and genetic diversity is harder to recover, Gambini said.

Although conservationists are concerned about the fast rate of koalas' decline, "there is a chance" that scientists can save the species through cryopreservation, Lynch said.

"I support multipronged approaches like this," he said. "By preserving the environment with traditional conservation we allow re-introductions because the species have somewhere to live."

Extreme coastal flooding events are occurring far more frequently in our warming world than ever before, threatening countless communities that will only become more vulnerable as climate change intensifies.

A recent study found that once-in-a-century flooding events now strike on our planet about once a decade. The study, published June 10 in the journal Nature Climate Change, also found that human-driven climate change has quadrupled the frequency of coastal sea level extremes since 1900.

The findings were released alongside another study by a separate team, published in the journal Science Advances, that found human-caused sea level rise was clearly measurable at 97% of sites sampled around the world, and was responsible for around 58% of the observed daily extreme water level exceedances between 2000 and 2018. In other words, human activities are the primary drivers behind sea level extremes — which include storm surges, high tides and rising sea level anomalies.

As the ocean's potential to devastate coastal communities surges, Live Science spoke with Sönke Dangendorf, lead author of the Nature Climate Change study, to learn more about what's to come. Here's what he had to say.

Patrick Pester: How do you separate human-driven sea level rise from natural forces?

Sönke Dangendorf: The absolute basis for doing these kinds of investigations is to work with observations, but observations are unfortunately sparse. We have a few more than 100 tide gauges [distributed worldwide] that offer long, century-scale records of sea level change since the early 20th century. We see that sea levels are changing at those locations, but we cannot tell a whole lot about what is happening elsewhere. So, what we can do is use the same climate models that we use to produce future projections of sea level change.

If you compare observations with the models, then the models need to be able to reproduce what the observations have shown. That was the first step we did, and indeed we proved in this study that the climate models are capable of reproducing observed climate. The nice thing with climate models then is that if you are able to reproduce what has been observed, you can start doing experiments. For instance, you can keep greenhouse gases constant in the modeling and then assess the influence of natural climate variability on the changes that we have observed. That's what we did in the study.

We found that we have seen already a 12-fold increase on average globally in what used to be a once-in-100-year event in 1900. And when we do these forcing experiments, we have also seen that anthropogenic forcing [human-driven change], in particular since the 1970s, has become the dominant force.

PP: What does this mean for coastal communities around the world?

SD: A couple of centimeters of sea level rise doesn't sound like a whole lot in theory, but if you live along the coast, it hits you much harder than you might think. Just an example: I used to live along the U.S. East Coast in Norfolk, Virginia. The community was built along the water, and they used to be fine in the 1950s and 1960s; they wouldn't see flooding at all, or maybe just once every five or six years. But due to sea level rise, what happens now is that high tide leads to flooding. You see flooded streets, and that affects your commute, so people increasingly cannot make it to work.

It affects your daily life suddenly. And then it makes it very hard for you and your coastal community because you have increasing insurance costs — the accumulated costs of these events can easily be as much as a major hurricane making landfall. So, this is a daily experience that many people already have, and it's a direct impact of sea level rise.

With respect to what we assessed in these more extreme events, people may absorb a once-in-a-100-year event once in their lifetime. They may experience something like a Storm Sandy, and they may be able to recover from that, but if you think about recovering from that basically every eight years — the frequency of these events nowadays compared to 1900 — that's of course way more difficult and not feasible for many people.

PP: What can we do?

SD: We can adapt. The silver lining here is that we have shown humans are the dominant forcing factor behind these changes. That's the silver lining because it means if we react, we can do something about it.

The reaction to changes in climate is often delayed, so we have sea level rise that we are already committed to. For instance, if you look into projections, they all agree with respect to what happens until around 2060, independently of how much greenhouse gases are emitted. There's no way around that. We could stop emitting greenhouse gases today, and we would still experience it. So, we need to adapt to that sea level rise, but if we mitigate climate change, if we stop emitting greenhouse gases, then we can avoid dangerous sea level rise, and that's very important.

PP: What will the world look like in 2060 with the committed sea level rise?

SD: According to the last IPCC [Intergovernmental Panel on Climate Change] report, what used to be a once-in-a-100-year event in the present day will occur annually at 19% to 31% of tide gauge locations by 2050. So, at about a quarter of the locations, you will experience these once-in-a-100-year events annually, and that is something that is just mind-blowing.

The changes are happening much quicker in low-latitude locations. The reason is that in the tropics you typically have a less variable climate. You don't have these massive swings all the time. For instance, in the North Sea, we have a storm season, and we have huge tide ranges. We are already adapted to pretty massive changes of multiple meters, so a couple of centimeters of sea level rise do not play out that hard, but in the tropics, where it's more calm, it makes a huge difference.

As an analogy, think about two hurdle runners. You have one hurdle runner that's compared to the tropics; he jumps very consistently but always below the hurdle, so he never makes it over. Then you have another hurdle runner that's the North Sea type of guy. His jumps are very variable. Sometimes he's very high and makes it over that hurdle, but very often he also jumps very low. Now think about lowering that hurdle, which is comparable to increasing sea levels. Suddenly, that hurdle runner who is very consistent makes it over all of the time, while the guy from the North Sea may jump over the hurdle a couple more times, but he also still has the very extreme lows. So, the constant jumper is way more sensitive to these changes.

Editor's note: This interview has been edited and condensed for clarity.

This stunning astronaut photo shows the last time one of NASA's iconic space shuttles photobombed astronauts' view of Earth as the spacecraft docked with the ISS.

NASA's Space Shuttle Program included five plane-like spacecraft — Columbia, Challenger, Discovery, Atlantis and Endeavour — which collectively completed 135 missions between 1981 and 2011, racking up more than 32,000 hours in space. During that time, they helped to construct the ISS and, later, ferry astronauts to and from the station. The space shuttles also helped to deploy and maintain several other important spacecraft, including the Hubble Space Telescope.

The last space shuttle to fly was Atlantis, which successfully completed 33 missions (the second-highest total, behind Discovery).

This photo shows Atlantis approaching the ISS for the last time as it passed over the distinctive turquoise waters of the Bahamas. The space shuttle's bay doors are open, exposing its cargo area. This was standard procedure for all space shuttles once they reached low Earth orbit because it prevented the spacecraft's radiators from overheating.

The open doors also enabled the shuttle's docking mechanism, located within its cargo bay, to attach to the ISS, thus creating a pressurized seal so that astronauts could move between the two spacecraft.

Atlantis' final flight began on July 8, 2011, when it launched from the Kennedy Space Center in Florida vertically strapped to a massive fuel tank and a pair of rocket boosters. It returned to Earth on July 21, gliding down to land onto a runway at the launch site. (The spacecraft is now on display at the Kennedy Space Center Visitor Complex.)

In addition to helping construct the ISS, NASA's space shuttles visited Russia's Mir space station, serviced Hubble, and deployed both the Magellan probe to Venus and the Galileo probe to Jupiter. In total, the space shuttle orbited Earth 4,848 times, traveling nearly 126 million miles (203 million kilometers) — more than 525 times the distance between Earth and the moon.

Astronaut photos of the space shuttles were popular because they offered "punctuated snapshots of distinct places on Earth" that were "framed by a human eye," NASA representatives wrote in 2011. "These images speak to people."

While the Space Shuttle Program achieved a lot during its 30-year history, it famously suffered two tragedies: the 1986 Challenger and 2003 Columbia disasters, which killed all crewmembers on board.

NASA eventually canceled the program in 2011, citing the high cost of maintaining the aging spacecraft and a reduced need for the vehicles after the completion of the ISS the same year. To this day, the space shuttles remain the only winged spacecraft to carry humans into space.

See more Earth from space

Archaeologists have found five pairs of iron shackles at a 2,300-year-old Celtic site in France ‪—‬ a discovery that suggests the small settlement was frequented by metalsmiths and slave traders.

The "extremely rare" shackles were discovered in the town of Allonnes in France's Loire Valley in 2019, but the finds from the two-year-long excavation were announced to the public on July 9 in a translated statement from the French National Institute for Preventive Archaeological Research (INRAP).

The settlement at Allonnes was established along with a religious complex in the third century B.C., according to the statement. Specialist artisans ‪—‬ including blacksmiths, coppersmiths, bronze workers and sheet-metal workers ‪—‬ plied their trade from small workshops, archaeologists found at Allonnes.

During the excavation, the team discovered a large number of high-quality metal objects — such as swords, spearheads, keys and horse harness fittings — but the iron shackles were a surprise because they are extremely rare for the time period. Excavators found a double-wrist restraint, an ankle restraint and three other portions of metal restraints.

The presence of shackles suggests that Allonnes may have been a hub for slave trading in the Late Iron Age (450 to 50 B.C.), according to the statement.

"The identification of restraints and weapons suggests a hierarchical social organization composed of dominant and subordinate groups — prisoners or slaves," Thierry Lejars, a specialist in Celtic metalwork, said in a translated interview with INRAP.

The Gauls, a loose association of Celtic tribes, were known to enslave prisoners of war, convicts and debtors, according to the statement, and they were often forced to work in the fields. These men, women and children then lost their rights and could be bought and sold by their owners. Because the Celts did not leave many historical records of their own, however, not much is known about the practice of slavery in pre-Roman Gaul. The shackles from Allonnes provide new insight into the lives of people who were typically invisible in historical accounts.

The small diameter of the wrist restraint ‪—‬ 2.4 inches (6 centimeters) ‪—‬ suggests it may have been used on a woman or a child, according to the statement. And the ankle restraint was over 2.2 pounds (1 kilogram), revealing the weight that enslaved people had to carry around.

Archaeologists also uncovered a religious sanctuary at Allonnes, along with offerings that included clothing and jewelry such as rings and amulets. Many of the offerings had been deliberately deformed or mutilated, likely to transform a mundane possession into a gift for the gods, the statement reported.

Hundreds of coins were also recovered at the site, and their mint dates spanned more than five centuries, Isabelle Bollard-Raineau, an ancient-coin expert with the French ministry of culture, said in the translated INRAP interview. About a third of the coins found at Allonnes had been filed, sheared or etched with a chisel.

"These mutilations reveal a ritual intention: the removal of the coin's commercial function in order to dedicate the object to the sacred, thereby ensuring the permanence of the offering," Bollard-Raineau said.

Allonnes was a significant Celtic site at the intersection of several major roads in ancient times, and the analysis of the metal finds has revealed important new information about some of the most powerless members of Gallic society.

See how much you know about the Celts with our Celtic quiz!

Interstellar space just got a little sweeter: A type of sugar called erythrulose has been found near the center of the Milky Way, according to a new study.

The detection, made in a gas cloud called G+0.693-0.027, is the first time this sugar has been found outside the solar system and adds to research identifying similar life-friendly ingredients around our galaxy, such as water.

Erythrulose, which is made up of four carbon atoms, is also found in raspberries. Its interstellar presence was confirmed by the Yebes 40-meter and IRAM 30-meter radio telescopes in Spain, the research team reported Monday (July 13) in the journal Nature Astronomy. The signal of erythrulose was confirmed with patterns measured in the laboratory.

While space researchers often focus on water and carbon when searching for the ingredients of life, sugars are also essential. "Sugars are important molecules in living systems, helping to provide energy, build important biological structures, and form parts of genetic material," the researchers said in a statement.

"We were able to achieve this detection thanks to the combination of exceptionally sensitive observations, extensive frequency coverage, and highly accurate laboratory spectroscopic data," study co-author Izaskun Jiménez-Serra, a staff researcher at the Spanish National Research Council, told Live Science in an email. "In addition, our astronomical target is one of the richest chemical inventories in the galaxy, which enhances the probabilities of detection,"

Finding erythrulose, he added, "is particularly relevant for the field of origins of life" because that sugar changes the configuration of threose — yet another sugar which is believed to be the precursor of the first nucleic acids that evolved into RNA and DNA.

Sugar, space, and everything nice

Sugar has been spotted in meteorites and asteroid samples before, particularly ribose (an RNA building block) and glucose (a product of photosynthesis on Earth). Recently, for example, samples from the asteroid Bennu returned by the OSIRIS-REx mission were found to contain both ribose and glucose, suggesting that these vital ingredients for biology are available elsewhere in the solar system.

Previously, scientists could not figure out how erythrulose could be made in conditions simulating the early Earth. That's because lab experiments "yield insufficient concentrations" of erythrulose on the surface of prebiotic (pre-life) Earth, the researchers explained.

The new finding of erythrulose in an interstellar gas and dust cloud, by contrast, suggests that erythrulose could be found in the interstellar medium for incorporation into rocky planets like Earth earlier, when they are first forming and evolving.

As such, ribose, glucose and erythrulose could have been part of the "sugar inventory" on Earth before it fully formed, the researchers said. "The findings suggest that erythrulose can be made from simpler molecules on dust grains in space, and may then become part of more complex chemical systems," the team said in the statement.

The sweet detection adds further evidence to the theory that many, if not all, of the essential ingredients of life are plentiful in space.

"One of the most exciting next steps is to search for even more complex sugars and for molecules that are direct precursors of RNA, and other biologically important compounds," Jiménez-Serra told Live Science. "We want to understand how far prebiotic chemistry can progress before planets are even formed, and what chemical inventory young planetary systems inherit from interstellar space."

This unique helmet comes from the Elamite culture, an ancient civilization that flourished for nearly three millennia in what is now Iran. Likely worn by a warrior king more than 3,000 years ago, the helmet has been decorated with a large bird of prey that is swooping down over three divine figures.

The dome-shaped bronze helmet measures roughly 8.5 inches (21.6 centimeters) in diameter and has a thin, cutaway area on the front that would have gone over the wearer's eyebrows. Originally, a small projection would have extended down between them to cover the wearer's nose. Gold-covered silver studs line the edge of the helmet, and a bronze tube on the back likely once held a plume of feathers or hair.

The helmet, which is in the collection of the Metropolitan Museum of Art, was made by a master artisan of the Elamite culture, one of the earliest civilizations of the ancient Near East. The Elamites lived in what is now southwest Iran, along the eastern Persian Gulf, from roughly 2700 B.C. until they were conquered by the Persian Empire in 539 B.C. Elam was frequently at war with neighboring Mesopotamian cities, including Ur and Babylon, and archaeologists have found numerous examples of the culture's elaborate weapons and armor.

But this particular helmet is "a masterpiece of ancient art" that "has no parallels in either the representative art of the ancient Near East or from excavations," archaeologist Oscar White Muscarella wrote in a 1988 book about the ancient Near Eastern bronze and iron artifacts in The Met's collection. This helmet's unique shape and decorations make it stand out from other Elamite armor.

On the front of the helmet are three gold deities: two females and one male. The male deity carries a vessel with water cascading out of it, suggesting he is an Elamite water god. The two identical goddesses wear horned headdresses and jewelry, and they are holding up their hands in a gesture of prayer. A raptor is positioned vertically over the water god, possibly symbolizing the bird of prey of the battlefield that awaits the victims of the warrior king who wore the helmet, Charles K. Wilkinson, curator emeritus of Near Eastern art at The Met, wrote in a 1965 study of the object.

The helmet certainly would have been worn by someone of high rank in the Elamite culture, Muscarella and Wilkinson both wrote, but it was likely symbolic as well as functional. The representations of important deities were probably intended to ward off evil and conflict on the ancient battlefield.

For more stunning archaeological discoveries, check out our Astonishing Artifacts archives.

Can you put together last week's Astonishing Artifact?

On April 6, the four crewmembers of NASA's Artemis II mission swooped around the far side of the moon in their Orion spacecraft, disappearing from Earth's sight and losing all contact with humanity for roughly 40 minutes.

At the same time, some 250,000 miles (400,000 kilometers) away, Chris White, the mission's lead communications officer, was nervously pacing the halls of NASA's Mission Control Center in Houston, waiting for the chance to do his job again.

"It was all nerves," White, the lead integrated communications officer (INCO) on Artemis II, told Live Science. In addition to maintaining communication with the Orion spacecraft (an impossible task while the moon blocked every signal), the INCO team also controlled its exterior cameras — a job White had previously done for the International Space Station (ISS).

The team knew for over a year what Orion's lunar flyby would entail, and which shots the cameras should capture. They had sent a checklist of nearly 300 commands to Orion that morning, telling the cameras exactly what to do after the spacecraft vanished behind the moon. All that remained was to wait.

After 40 minutes, bits of telemetry data started popping up on White's monitor as the Orion crew reemerged safely from behind the moon. Voice contact soon followed. But it would still take another day for Orion's flyby photos to traverse the space between the moon and Houston. When White finally opened the file the next morning, his body failed him.

"I opened a photo — the eclipse photo — and I couldn't breathe," White said. "I was like, 'There's no way that this turned out this well on the first try.'"

The INCO team's incredible Orion spacecraft photos have now been viewed by tens of millions of Earthlings. Live Science recently spoke with White to get the inside story of the images and the entire Artemis II mission as it was seen from NASA mission control.

Brandon Specktor: In a nutshell, what was your job on the Artemis II mission?

Chris White: During the mission, the INCO console manages all of the communication systems on the spacecraft, as the name kind of implies. We handle not just the video and the camera system but also the onboard audio system — which was the first flight for that — the system for radio communication and the optical communication system, which was a laser system on Artemis II. We also handle a couple of other minor systems.

BS: What was the vibe during liftoff?

CW: So, for liftoff, I was in the back, in a support room. The vibe was intense. Everybody was laser-focused on the task at hand. During simulations leading up to it, we had fake, simulated CGI views [of liftoff] to give us an idea of what we were going to see. I always thought, "Man, it's going to look so much cooler in real time." But then during liftoff, I looked up from my console screen zero times to look at the live video. So I didn't see a lot of that footage until the next day, when I had a chance to breathe.

The INCO team was basically flat-out busy for at least the first three flight days. For a lot of my team, it wasn't until after flight day three where things — and I'm going to use air quotes — loosely "calmed down." I don't think any of us truly relaxed until the vehicle was safely in the water.

BS: Let's talk about the lunar flyby. What was your experience watching along with the crew as they got closer and closer to the moon?

CW: It was incredible. I've seen the moon through the ISS cameras, and I'd watched the moon, over the course of the previous five flight days, slowly get larger and larger. But there was something logarithmic — almost like it just got really large very quickly on flight day six as we got close to the moon.

And the moon looked wrong, which sounds kind of crazy to say. We're so used to the way that the moon looks from our perspective here on the Earth, that when the vehicle was coming at it from an angle, you could see more of the backside of the moon. So you're in awe of it approaching and getting larger and realizing what's about to happen ‪—‬ but also my brain hurt trying to reconcile what I was seeing, because it didn't look correct. The shape and texture were different than what my brain expected.

BS: And the colors too, based on what the astronauts said. Did you notice anything unusual about the moon's coloration?

CW: It was hard to tell. The bandwidth limitations of being that far away from Earth made it hard to distinguish a lot of those finer details. But there was a moment where we looked at it and we were like, "I think we can tweak the exposure on this." It was a little too dark, and then we bumped it up a little bit. And all of a sudden, these muted grays became a little bit more brown. I was not expecting to be able to see that from our cameras.

You see it much more in some of the high-res photos that the crew took. But it was honestly shocking to see how much more color shows up even just a little bit as you get closer.

BS: As you were doing that flyby, did you have a strict checklist of shots you had to take?

CW: Yeah, absolutely. Flyby was a heavily choreographed event for the Orion cameras, as well as the crew and the science community. But we had started working on that plan well over one year earlier, and we knew exactly what shots we wanted and when we wanted them. The timing of all that shifts slightly, depending on exactly when you launch. So we had a framework in place, and then we just tweaked the timing in the 24 hours leading up to the events.

I think it was something like 290 total commands over the course of eight hours. We just scripted and time-tagged and put them on the vehicle, so it just clicked through them.

BS: How does that work during the eclipse phase, when you were out of contact?

CW: So we knew when Earthset ‪—‬ and, therefore, the start of the loss of signal (LOS) ‪—‬ would be and when Earthrise would be. And so we had the cameras flip into kind of a time-lapse mode at that point and then take a 30-second interval time lapse as the Earth got smaller and smaller and smaller behind the moon. All of that was scripted.

And then, behind the moon, during the LOS, it continued to take photos at a slower pace. I think it was like once every few minutes. We had all that on a timer, basically.

BS: How soon after the lunar flyby did you get to see the images?

CW: Luckily, we had a great optical comm pass that same night. So all those photos came down via laser to the Earth, and I saw them the next day. I didn't see them in the moment; I saw them the next day.

And I opened that photo — the eclipse photo — and I couldn't breathe. I was like, "There's no way that this turned out this well on the first try."

BS: Is that the photo that stands out most to you from the flyby?

CW: Yeah, it absolutely is. A lot of the photos you take in space, people are like, "Oh, where are the stars?" And it's because you have to expose the camera to the very bright, shiny spacecraft in front of you, and all the stars fade away into the blackness in the background.

But because the sun was behind the moon, you have the moon in the foreground in focus, the sun kind of bleeding out from behind it. The stars and the planets are all there. You can see Venus; you can see Saturn; you can see Mars. And then you have the glow of the spacecraft — it's not lit by the sun, but by the Earth — in the foreground. It was an incredible photo.

BS: What were you guys doing during that loss-of-signal phase? What was the vibe like then?

CW: I was pacing around the control center. The INCO team is responsible for keeping communication with the vehicle as much as we can, and there's not really much that we can do about that when you put a celestial body between us and the crew.

It's all nerves. It's all of the, "Hey, did we configure everything correctly? Are communications going to come back on the other side?" So just to distract myself for the 40 minutes that we were at LOS, I just kind of walked around the building and chatted with other people, just to try to keep myself distracted.

It wasn't until about three or four minutes after Earthrise that we started getting stable video, and then the crew called down. And that was really when I breathed a sigh of relief, once I heard voice coming down from the vehicle again.

BS: Do you feel different after this mission?

CW: People keep asking me that. I don't know that I've had quite enough time to fully unpack the mission. But I think it's slowly sinking in that we just sent four people around the moon, literally further away from Earth than ever. And I think, not only did we change them and the flight control team from that experience, but I think we changed a lot of people's perceptions of the moon, which is awesome.

BS: Do you know what your role for Artemis III is going to be?

CW: I definitely still plan to be on the INCO team for Artemis III. I will not be the lead for that mission. But I definitely still plan to be on console and hope to take some even more incredible photos during that mission.

BS: Any closing thoughts?

CW: I just want to stress what a team effort this was. The vehicle cameras had a script and a plan that involved not just the INCO team. But to point these cameras, I have to get the solar arrays swung forward in a specific direction, so I have to coordinate with the power guys. I have to sometimes ask the GNC [guidance, navigation and control] team to rotate the vehicle itself, which is entirely different from how we do things on ISS. There was our imagery team handling camera settings and proper exposure. There's the engineers who developed these systems.

This was not just me and the INCO team on console. It was truly a full flight control team effort to get these.

Editor's note: This interview has been condensed and edited lightly for clarity.

Are you a NASA nerd? See how well you score on our Artemis quiz to find out!

Consider the following scenario. Suzy is 63, recently retired, and trying to decide when to start receiving Social Security and how to manage her retirement savings to minimize the tax hit.

She opens an AI chatbot, types in the details and gets a calm, well-organized and confident answer: Claim now, convert this much, here is the reasoning.

The chatbot sounds authoritative and even shows its work. So Suzy follows its guidance and never calls a financial planner. Maybe the advice was fine. But maybe it quietly ignored the fact that Suzy's spouse is younger and in poor health, which can flip the Social Security math. It also may have overlooked that the retirement savings plan conversion it suggested would push Suzy into paying higher Medicare premiums two years later.

Suzy won't find out for a long time, if ever, whether this guidance was right for her. And the AI will never call back to say it was unsure.

Suzy isn't an exception. AI chatbots have entered everyday life with remarkable speed: A 2025 Pew Research Center survey found that 34% of U.S. adults and 58% of those under 30 have used ChatGPT, roughly double the share two years earlier.

A growing number are asking AI about money, and some are getting burned. According to a 2025 survey of 2,000 U.S. adults by Pearl.com, a professional services platform, 19% said they lost more than $100 by following financial advice from an AI chatbot. Among Gen Z investors, that figure rose to 27%.

These aren't hypothetical risks. People are already paying for answers about their money that are confident — and wrong.

As a finance professor who has been closely watching the spread of AI into personal finance, this is the part of the AI story that worries me most. And it's not the part you usually hear about.

We argue about AI the wrong way

There are two seemingly opposite complaints about AI. One is that people trust it too much, treating a chatbot like an oracle, a tendency researchers call algorithm appreciation. The other is that people don't trust it enough and dismiss its useful tools, a tendency known as algorithm aversion.

I argue these are actually two sides of the same coin, and what decides which side you see is whether you can tell when the AI is wrong.

When an AI fails in an obvious way, you notice and lose confidence. So you're more likely to seek a professional or another human you trust sooner than you otherwise would. That is the safe failure.

The dangerous failure is the opposite. The answer is fluent, confident — and wrong. You have no way to catch it, so you keep managing the problem yourself long past when you should have asked for help.

The trouble is that with money, the second kind of failure is the common kind.

When you mistake fluency for accuracy

Three things make financial advice especially treacherous for AI.

First, fluency is not accuracy. People naturally read a confident and well-articulated answer as competent. But how polished an answer sounds tells you almost nothing about whether it fits your situation or the accuracy of the proposed solution. A chatbot can be word-perfect and still be wrong about your taxes, because your taxes depend on details it never asked about.

Second, AI is least reliable exactly where the stakes are highest. AI tools are good at routine and general topics: what a Roth IRA is, how compound interest works, the difference between a stock and a bond.

But financial life is full of rare, complicated, one-time decisions: exercising stock options, understanding the alternative minimum tax, making required, minimum 401(k) distributions, deciding on a Social Security strategy as a couple, drawing up a divorce settlement.

I made a similar argument three years ago about AI trading on Wall Street. Because market crashes are rare, there's little data for AI to learn from, so it can be most confident exactly where it is least informed.

That worry hasn't faded. Market watchers now caution that AI trading bots are creating fresh financial risks, and that same blind spot applies to your personal finances. Researchers call this uneven competence a "jagged frontier" — reliable with common cases but unreliable for unusual ones. And in finance, the unusual cases tend to be the expensive ones.

Third, you often can't check the work. Financial advice is what economists call a "credence good," like a mechanic's diagnosis or a doctor's recommendation. You often can't tell whether the advice was good, sometimes for years. A mistaken tax move may not surface until an audit. A bad 401(k) drawdown plan may not bite until the stock market slumps. Without quick feedback, the wrong-but-confident answer never gets corrected.

This is why the Pearl numbers above are probably an undercount, since they capture only losses people noticed.

The quiet failure is the one to watch

Notice that the real harm in Suzy's story isn't a single dramatic mistake. It's that a confident answer made Suzy feel no need to call a professional, so the call never happened.

The danger is not so much that you act on bad advice but that you never seek good advice. The smoother and more reassuring the tool, the easier it is to stay in do-it-yourself mode past the point when you need outside help.

Who's most at risk? In a study of a large robo-advising platform in India, co-author Vishaal Baulkaran and I found that its users skew young, are predominantly male and tend to be smaller retail investors and professionals. And new account sign-ups rise during periods of high market volatility.

In other words, the people leaning hardest on automated advice match that 27% figure among those Gen Zers who lost more than $100 while using a chatbot for financial advice. They reach for it just when markets turn turbulent and a wrong move is most costly.

There's also an incentive worth naming. In my new analysis, I argue that a tool that earns its revenue by holding your attention has a reason to sound confident and helpful: Confidence keeps you on the platform. The catch is that the user it retains that way is sometimes the one who should have been handed off to a human.

A system tuned to keep you engaged isn't the same as one tuned to protect your financial future, and the two can point in different directions. The disruption is already underway, as wealth managers face what Bloomberg has called a chatbot reckoning. A single, new AI tax tool recently sent wealth management stocks sliding as investors bet that automated advice will eat into the business.

How to be smart about using AI

These findings don't mean that people should avoid AI for money advice. Used well, these tools are a valuable and free financial educator.

This is also not to say that a financial adviser always has the right answers. As with finding any kind of specialist, it's important to do research first and make sure they meet the kind of criteria laid out by the Consumer Financial Protection Bureau. Fee transparency is also crucial.

But if you do turn to AI, the skill is knowing where to draw the line.

Treat AI as a starting point, not a verdict. It's excellent for learning concepts, drafting questions and getting oriented before a meeting. It can teach people the vocabulary to have a smarter conversation with an expert.

But watch out for the signals that you have left its comfort zone and entered the territory where AI is weakest and a confident answer is least trustworthy. The red flags are large dollar amounts, tax consequences, anything irreversible and anything that turns on the specifics of your situation rather than a general rule.

Estate questions, the drawdown of retirement savings, strategies for claiming Social Security benefits, business structure and major one-time transactions all belong in this category. Those are the decisions that call for bringing in a human, such as a certified financial planner.

And remember, confidence isn't competence. When the answer about your money sounds most polished and most certain, that's not a reason to relax. On the hardest questions, that smooth confidence is exactly the signal that you should pick up the phone and talk to an expert.

This edited article is republished from The Conversation under a Creative Commons license. Read the original article.

Archaeologists have discovered 18 ancient tombs in an Egyptian town along the Mediterranean Sea.

The tombs ‪—‬ which were unearthed in Marina el-Alamein (also spelled Alamin), about 60 miles (100 kilometers) west of Alexandria ‪—‬ date to the Ptolemaic (322 to 30 B.C.) or Roman (30 B.C. to A.D. 395) period, the Egyptian Ministry of Tourism and Antiquities said in a translated statement announcing the find.

During the Ptolemaic period, Egypt was ruled by the descendants of one of Alexander the Great's generals, while the Roman period started with the death of Cleopatra VII, when Egypt became incorporated into the Roman Empire as a province.

The team noted that 11 of the tombs had been carved deep into the ground, while the seven others were located closer to the ground's surface. The tombs held many artifacts ‪—‬ most notably, 24 "gold tongues" that were likely put into the mouths of mummies, and an offering altar with a base designed to look like a false door.

"The false door is one of the oldest and most recognizable elements of ancient Egyptian funerary architecture. In traditional Egyptian belief, it symbolized the interface between the worlds of the living and the dead, through which the deceased could spiritually receive offerings presented by the living," Hesham Hussein, the undersecretary for Lower Egypt and Sinai archaeology at Egypt's Ministry of Tourism and Antiquities, told Live Science in an email.

The fact that the design of a false door was carved into the altar "suggests that the symbolic meaning of the false door remained important even as its architectural function evolved," Hussein added.

Gold tongues from ancient Egypt

Gold tongues have been found in mummies at a number of ancient Egyptian sites. The ancient Egyptians considered gold to be the flesh of the gods, and they believed gold tongues could help the deceased communicate with them in the afterlife.

"Gold tongues are a well-documented feature of some burials dating to the Ptolemaic and Roman periods in Egypt," Hussein said. "They are generally interpreted as symbolic funerary amulets intended to enable the deceased to speak in the afterlife, particularly during the judgment before Osiris, or more broadly to communicate and recite sacred formulas in the next world."

Interestingly, one of the newly found gold tongues is shaped like the "Eye of Horus." Horus was a falcon-headed god associated with the sky and warfare. Artifacts shaped like his eye are often found in Egypt and were used to ward off evil, according to the statement.

However, it's unclear if some of these artifacts are actually gold tongues, Attilio Mastrocinque, a retired archaeology professor formerly at the University of Verona in Italy, told Live Science. Mastrocinque has written extensively about Greek and Roman religion but was not involved in this excavation.

After looking at the photos posted by the ministry, he noted that one appears to show a wheat ear. Wheat ears were associated with fertility and images of them were popular in the ancient world. The newfound artifact looks similar to silver wheat ears that have been found in Roman sanctuaries in Europe, Mastrocinque added.

Altar with a false door?

False doors are commonly found in ancient Egyptian tombs and offering altars are often near these doors. In this case, the base of an offering altar resembles a false door.

Krzysztof Jakubiak, an archaeology professor at the University of Warsaw who has excavated at Marina el-Alamein in the past but was not involved in the recent excavation, noted that this find likely needs additional analysis.

"I would exercise caution in asserting a direct comparison between the iconographic motifs visible on the discovered altar and those of the false door iconography," Jakubiak told Live Science in an email. He said it's possible that the altar was not finished and its existing appearance simply resembles a false door.

Hala Mostafa, an archaeology professor at Ain Shams University said in an email that he thought the altar may depict the hieroglyphic sign for "offering" rather than a false door.

Goddess statue and other finds

One of the tombs contained an 8.2-foot-long (2.5 meters) granite coffin whose lid was still on when the tomb was discovered. The team is currently examining the skeletal remains found inside.

Other finds included an incomplete statue of Aphrodite, a Greek goddess associated with love and beauty. During ancient Egypt's Ptolemaic dynasty, Greek culture and religion became increasingly popular in Egypt. Mastrocinque said it will be interesting to see if there is a structure for Aphrodite near the statue

"It is important to know where this statue has been found," Mastrocinque told Live Science in an email. "Was there a little cultic place of Aphrodite within this funerary complex?"

Dorota Dzierzbicka, director of the Polish-Egyptian Archaeological Mission to Marina el-Alamein, said that the new finds, along with finds made at the site in the past, reveal that the town was "a culturally diverse community in which Egyptian and Graeco-Roman traditions coexisted and blended in everyday life and funerary practices." She noted that the new discoveries were made by Egyptian archaeologists who work at the site.

See how much you know about mummies with our mummy quiz!

The two major earthquakes that struck Venezuela just 39 seconds apart on June 24 had slightly different epicenters in north-central Venezuela. The first (M7.2) struck near San Felipe, and the second (M7.5) near Yumare, leaving thousands dead and thousands more injured, according to government officials. But beyond the devastation, the sequence opened a rare scientific opportunity: Researchers think the unusual "earthquake doublet" could offer new insight into how large fault systems interact and how some of the most destructive earthquakes grow.

Large earthquakes are typically followed by smaller aftershocks. But particularly intense events can also alter stress on nearby faults ‪or along the same fault, ‪triggering another major earthquake.

These scenarios are infrequent but not unprecedented. The 2023 sequence in Kahramanmaraş, Turkey, and the 1997 earthquake doublet in Harnai, Pakistan, are two well-known examples.

The Venezuelan sequence also reinforces an emerging consensus among seismologists: that treating faults as isolated structures may underestimate the destructive power of quakes in regions where multiple tectonic faults meet, as they do both in Venezuela and around California's San Andreas Fault system. That's a problem, because many of the seismic hazard models in California do not account for those multi-fault interactions.

A natural laboratory for understanding major earthquakes

The fault system involved in the Venezuelan earthquake ‪—‬ which includes the Boconó, Morón, San Sebastián and El Pilar faults ‪—‬ shares several key characteristics with the San Andreas Fault. Both are right-lateral strike-slip fault systems ‪—‬ in which the crustal blocks slide horizontally past each other ‪—‬ located along the boundary between two tectonic plates: the South American and Caribbean plates in Venezuela, and the Pacific and North American plates in California.

Despite these similarities, researchers caution that the two systems differ in important ways.

"The main difference is that the Venezuelan plate boundary has a much more complex fault architecture," Julián García Mayordomo, a senior scientist in the Geological Hazards and Climate Change Department at the Geological and Mining Institute of Spain, told Live Science.

The difference stems largely from the Maracaibo block, whose interaction with surrounding faults creates a much more intricate plate boundary than California's.

"The other difference is the speed at which the plates move," García Mayordomo pointed out.

In Venezuela, the tectonic plates move past each other at about 0.8 inches (20 millimeters) per year, compared with roughly 1.2 inches (30 millimeters) along the San Andreas Fault. Faster plate motion allows tectonic stress to accumulate more quickly, which influences how often large earthquakes occur over long timescales, but not when the next one will strike.

Along the San Andreas Fault, magnitude 7 or larger earthquakes occur, on average every 100 to 200 years, although the frequency of recurrence varies along the fault. The last major rupture in Southern California was the magnitude 7.9 Fort Tejon earthquake in 1857. In Venezuela, estimated slip rates suggest recurrence intervals of one to two centuries. The region experienced two devastating earthquakes in 1812, part of a multiple-rupture sequence that included events of magnitude 7.5, 7.2 and 6.5, and a 2018 study concluded that the Boconó Fault had already accumulated enough strain to generate another major earthquake.

However, these are statistical averages. The recurrence of large earthquakes is highly irregular and depends on a multitude of factors, many of which we still don't fully understand. So a major event could occur in 100 years ‪—‬ or even tomorrow.

Looking beyond individual faults

This uncertainty is precisely one of the reasons the Venezuelan seismic doublet is generating so much interest among seismologists.

"It is the kind of natural event that can sharpen and test the rupture-interaction concepts that paleoseismic models like ours can only infer indirectly," said Liliane Burkhard, a geologist and geophysicist at the University of Bern and first author of a recent study suggesting that the junction between the San Andreas and San Jacinto faults in Southern California is experiencing some of its highest tectonic stress levels in the past 1,000 years, told Live Science.

"Our Cajon Pass work relied on centuries of paleoseismic reconstructions to infer how stress evolves and whether ruptures can cross between fault systems," Burkhard told Live Science. But that doesn't give geologists real-time data, captured by seismic instruments, showing how different faults interact during quakes, she added.

The Venezuela doublet offers exactly that opportunity. The main lesson for California, Burkhard said, is that interactions between neighboring faults can play an important role in the evolution of large earthquakes.

"Whether it is Cajon Pass where the San Andreas and San Jacinto systems meet or the Boconó-San Sebastián in Venezuela, these are precisely the locations where single-fault hazard models break down because the real behavior depends on how stress is shared and transferred between adjacent structures," she said.

Still, the two systems are quite different. The Venezuelan sequence represents a different type of cascading rupture than the one described in Burkhard's research. At Cajon Pass, the "earthquake gate" concept explores whether a single rupture can jump from one fault system to another during the same earthquake, over tens of seconds of rupture propagation along a continuous fault trace. The Venezuelan doublet, by contrast, "looks like two distinct ruptures on what may be two separate fault structures, triggered in close succession," Burkhard said.

For Burkhard, the Venezuelan earthquake reinforces the need for seismic hazard models to move beyond treating faults as isolated structures and instead represent them as interconnected networks. The challenge is particularly relevant in California, where roughly 300 active faults may interact in ways that traditional hazard models do not capture.

New Zealand has already incorporated this lesson. After the 2016 Kaikōura earthquake ruptured at least 12 faults in a single event, New Zealand revised its National Seismic Hazard Model to include complex multifault ruptures.

García Mayordomo argues that both Venezuela and the United States should incorporate these complex rupture scenarios into seismic hazard assessments and building codes. Earthquakes involving multiple faults can produce longer-lasting shaking that increases structural fatigue and, ultimately, the risk of collapse.

"It's like a boxing match," García Mayordomo said. "Many times the winner isn't the boxer who lands the hardest punch but the one who keeps punching for longer."

Even so, researchers cautioned against drawing sweeping conclusions from a single earthquake.

"Each earthquake gives us one possible scenario," Judith Hubbard, an earthquake scientist and structural geologist at Cornell University told Live Science. "The range of earthquake behaviors is wide."

This image from the James Webb Space Telescope (JWST) offers a rare look at the hidden workings of Centaurus A, one of the most unusual and active galaxies relatively near Earth. JWST detected wavelengths of light humans cannot see, revealing a galaxy shaped by violence and chaos.

Centaurus A is relatively close to the Milky Way, which enabled JWST to study the strange galaxy in remarkable detail. It's no quiet, ordinary galaxy; it's the aftermath of a major cosmic collision. At its heart is an actively feeding supermassive black hole, surrounded by vast clouds of dust that trace the galaxy's turbulent history.

In visible light — such as images from the European Southern Observatory's La Silla Observatory and Very Large Telescope in Chile — thick dust lanes obscure Centaurus A's center, blocking part of the story. The Hubble and Spitzer space telescopes, both of which can see in near-infrared wavelengths, previously imaged Centaurus A, but they also saw mainly dust. But infrared light can pass through that dust, which enabled JWST's Mid-Infrared Instrument to see the galaxy's center glowing in white and pale pink, revealing filaments, loops and clouds of warm dust stretching across the scene.

Scientists believe Centaurus A collided with another galaxy roughly 2 billion years ago. That ancient merger left visible scars, which JWST captured in striking detail. Evidence of a galaxy pulled, stirred and reshaped over immense timescales appears throughout the image, from the warped gray-and-white parallelogram-shaped structure cutting across the galaxy, to the pink and lavender ribbons curving above and below it in an S shape. The image reveals how galaxy mergers rearrange dust and gas, trigger star formation and influence galaxy growth over time.

The image also shows how a nearby supermassive black hole can both fuel and limit the birth of stars. As material falls toward the black hole at the center of Centaurus A, it releases enormous energy and launches powerful jets that shape the surrounding gas and dust.

The image comes near the end of JWST's fourth year of science operations, which began with the release of spectacular images in July 2022. The telescope launched on Dec. 25, 2021, and is predicted to operate for about 20 years.

See how much you know about the world's most powerful telescope with our James Webb Space Telescope quiz!

Albert Einstein gave us the theory of relativity, explained the photoelectric effect and predicted the existence of gravitational waves. He revolutionized our understanding of space, time and gravity.

In fact, he is so famous for his brilliance that "Einstein" is synonymous with "genius." But being a genius doesn't mean you're infallible. So was Einstein wrong about anything?

"For sure, he was wrong about tons of things," Nicolás Yunes, a theoretical physicist at the University of Illinois Urbana-Champaign, told Live Science. "We remember him for the things he was right about, for the most part, because the things he was right about shocked the scientific world and eventually those ripples affected everyone on Earth."

For example, one of his most famous predictions was marred by a mathematical mistake. In 1916, Einstein correctly realized that the acceleration of matter could produce ripples in space-time that we now call gravitational waves. But when he and the physicist Nathan Rosen described these waves using mathematics, they ran into a problem: Any solution to the equations of general relativity that would allow for gravitational waves "blew up," Yunes said. "They had these singularities … these divergences. And solutions that diverge and explode like that, they can't be physical representations of reality."

As a result, Einstein changed his mind and decided that gravitational waves couldn't exist. He wrote up his results and submitted them to the journal Physical Review, which had recently begun sending papers to outside experts for peer review. An anonymous reviewer caught an error in Einstein's math, and when Einstein learned about it, he was so furious that he withdrew the paper and submitted it to a different journal.

But the reviewer had spotted a real error: Einstein's mathematical infinities were a coordinate artifact. Much like Earth's lines of longitude seem to converge to a "singularity" at the North Pole even though nothing unusual is happening there on the ground, Einstein's math could have been fixed by using a different set of coordinates.

Without Einstein's knowledge, the reviewer befriended and demonstrated the error to Einstein's assistant, who explained it to Einstein. Einstein corrected the error and republished the paper with the opposite conclusion, showing that gravitational waves do, in fact, exist.

Calculating "impossible infinities"

Remarkably, Einstein stumbled on the same error twice — at least, it seemed that way. When examining the mathematics around black holes, he once again calculated impossible infinities ‪—‬ this time, at the edge of a black hole. And once again, he concluded that this must mean the object couldn't exist.

"Einstein remained skeptical of the existence of black holes," John D. Norton, a professor in the Department of History and Philosophy of Science at the University of Pittsburgh, told Live Science in an email. "He was resolute in his judgment that there would be a singularity in space-time already at the event horizon of a black hole, which is now merely regarded as marking the point of no return for those falling into a black hole."

But this time, Einstein was not convinced that he made a mistake. Norton argues this wasn't just stubbornness; it reflected a philosophical belief in how Einstein thought mathematics and physics should relate to each other.

"He was unmoved by alternative analyses that found his mathematical infinities to be merely artifacts of the particular mathematical methods he preferred," Norton said.

Einstein and quantum mechanics

Einstein's resistance to quantum mechanics is probably his most famous wrong turn. His central objection was to a phenomenon called quantum entanglement: the idea that two particles can be linked in such a way that measuring one instantly affects the other, no matter the distance between them. In a 1947 letter to his colleague Max Born, he wrote, "I cannot seriously believe in it because the theory cannot be reconciled with the idea that physics should represent a reality in time and space, free from spooky actions at a distance."

Einstein thought this instantaneous phenomenon seemed to violate special relativity, which says that nothing can travel faster than light. As a result, he believed quantum mechanics must be incomplete and that there was some deeper, unknown description of reality that would restore order.

"He died not liking quantum mechanics," Yunes said. It wasn't until 1964, almost a decade after Einstein's death, that John Bell proved entanglement was real.

"Today, a lot of the technology that we have relies on quantum mechanics, and so we know it's correct," Yunes said. "But it's still incompatible with general relativity, with [Einstein's] classical theory."

"It's possible that general relativity is wrong," Yunes said. "It's also possible that quantum mechanics is not the right description when you're talking about systems that are very strongly gravitating and you're looking at Planck-scale-type dynamics," which are incredibly small scales at which quantum effects dominate. For instance, the center of a black hole, which is both compressed to the quantum scale but also sits inside the most intense gravitational field in the universe, is a place where general relativity predicts a singularity that quantum mechanics has no way to describe.

But many of Einstein's mistakes still moved science forward. "General relativity is a good example," Norton said. "Einstein based it on the idea that he was generalizing the principle of relativity to acceleration and on what he soon called Mach's principle. Neither proved compatible with his final general theory of relativity."

Einstein's mistakes might come as a surprise to others, but they didn't to him. Once, when writing a book with his collaborator Leopold Infeld, Infeld told him he was taking special care with it because Einstein's name would appear on it. Einstein laughed and said, "There are incorrect papers under my name, too."

See how much you know about Albert Einstein with our Einstein quiz!

Tropical forests draw down and store large quantities of CO₂ from the atmosphere. The Amazon rainforest in South America, for example, stores approximately 123 billion tonnes of carbon — more than is stored in any other terrestrial ecosystem in the world. But these forests are facing a critical challenge.

Research from 2023, which was carried out by me and more than 100 colleagues, found that tropical forests in South America are vulnerable to climate extremes. We determined that during an El Niño event, the warm phase of a natural fluctuation in the Earth's climate system, South American tropical forests may fail to act as a carbon sink.

This finding becomes even more alarming when we consider the increasing frequency and intensity of El Niño events. There have been twice as many "very strong" El Niños in the last 60 years as there were in the 60 years before that. And the US National Oceanic and Atmospheric Administration has recently confirmed that such an El Niño is currently underway.

Tropical forests absorb CO₂ through the process of photosynthesis and convert it into biomass. However, the balance between photosynthesis and respiration is delicate and depends on two factors: temperature and water availability.

In hotter and drier conditions, plants close the pores of their leaves to avoid water loss. But closing them effectively cuts off a plant's fuel supply because it is through these pores they absorb CO₂. This starves plants of the carbon needed for photosynthesis and to grow.

During El Niño years, which are characterized by high temperature anomalies, prolonged climate stress leads to reduced forest growth and increased tree mortality. The effects of this are felt for decades as carbon is released back into the atmosphere when the dead trees decompose.

Our findings revealed that during the 2015-2016 El Niño, when temperatures on land were at least a degree higher on average than usual conditions, some of South America's tropical forests effectively stopped absorbing carbon. This raises concerns about the possible impact of the current El Niño on the Amazon and global climate.

In our research, we measured over half a million trees across six South American countries over a period of more than 30 years, using tape measures to track their growth. These trees belonged to over 4,000 different species. We used this data to calculate precise estimates of the amount of carbon stored as a forest's aboveground biomass.

We found that the vulnerability of these forests to El Niño conditions was closely linked to their baseline climate. While we tend to assume that rainforests are all hot, wet and biodiverse ecosystems, seasonal drought is a reality for many tropical forests. Conditions in regions at the edge of the Amazon rainforest, for example, tend to be particularly hot and dry.

Our findings revealed that drier forests at the edge of the Amazon, where trees regularly endure periods of limited water availability, were especially susceptible to extreme El Niño conditions. On average, a 0.5°C increase in temperature caused these forests to lose 0.5% of their aboveground carbon.

Larger trees suffered the most. While tree mortality rates increased from 1.8% to 3% per year during the El Niño in South American tropical forests as a whole, mortality rates effectively doubled for medium (classified as over 20cm in diameter) and large trees.

The fact that larger trees with less dense wood died at much higher rates compared to small trees and those with high wood density points strongly to hydraulic failure, when intense atmospheric moisture demand snaps the tension in the tree's internal water column rather than slow carbon starvation.

These results suggest that adaption to seasonal drought may not be sufficient to protect tropical forests from extreme events. Climate extremes are possibly already pushing forests at the edges of the Amazon beyond their capacity to adapt, causing catastrophic carbon losses.

A looming threat

Scientists have warned that 2026 may again be the warmest year on record. Heightening the alarm further is the severity of the current El Niño. Never before has an an El Niño begun when oceans are already so warm and air temperatures so high.

On top of this is the fact that, over the past three decades, the edges of the Amazon have experienced some of the highest temperatures and most rapid warming the tropics have ever seen. The structural integrity of a forest is compromised when a major climate anomaly occurs before it has recovered from recent, multi-year stress.

These compounding factors mean that we risk witnessing tree and carbon losses on scales not yet seen.

Tropical forests are invaluable assets in the fight against climate change. But South American tropical forests, a once-reliable carbon sink, are vulnerable to intensifying heat and drought. There is a risk these essential ecological allies stop acting as a carbon sink as extreme climate conditions become the norm.

Preserving tropical forests is thus essential. Their ability to continue acting as carbon sinks hinges on efforts to protect them and a collective commitment to limit global temperature rise. The Amazon's future depends on this, and so does ours.

This edited article is republished from The Conversation under a Creative Commons license. Read the original article.

Rainforest quiz: Can you sort Earth's largest rainforests from biggest to smallest?

Most archaeologists spend time digging in the dirt or piecing together broken artifacts or bones in the lab, attempting to make sense of the past in a painstakingly slow process. But others use that information — and a little ingenuity — to re-create the sights, sounds, smells and tastes of ancient societies through a practice called experimental archaeology.

In his book "Dinner with King Tut: How Rogue Archaeologists Are Re-creating the Sights, Sounds, Smells, and Tastes of Lost Civilizations" (Little, Brown and Co., 2025), author Sam Kean delves into the overloaded sensory world of experimental archaeology practitioners. Along the way, he learns to knap a stone tool like early Homo sapiens did, create an intricate hairstyle that would make a Roman woman proud, tattoo someone using ancient tools, play an Aztec ball game, and bake the kind of sourdough loaf that King Tut once ate.

Kean spoke with Live Science about his book, which was a finalist for the 2026 PEN/E.O. Wilson Literary Science Writing Award and was named one of The New Yorker's best books of 2025.

Related: Read an excerpt from Kean's book, "Dinner with King Tut."

Kristina Killgrove: What intrigued you about experimental archaeology?

Sam Kean: There was sort of a conflict within me because, on the one hand, I really love the questions that archaeology brings up. There's some big, meaty questions about who we are as a species, how we spread across the Earth, how we changed as we spread across the Earth ‪—‬ these really important, big questions about human history. But whenever I would go to an actual archaeological site, it just seemed to me like the most boring work I could imagine. It's just people sitting around in the dirt with toothbrushes or dental picks or whatever, picking up potsherds, and it just seemed so tedious to me.

Experimental archaeology seemed like a lot more lively, sensory-rich field because archaeologists in this field are actually doing things. They're re-creating stone tools, making ancient foods. You can smell the past. So it was just a lot more exciting way for me to get into archaeology.

KK: Tell me about your research process for this book. Did you "embed" with archaeologists and participate in their experiments?

SK: Each chapter is set in a different time and place, so you're really immersed in a day in the life of that person. There was a lot of reading about traditional archaeology and what we've learned from that, because we have learned a lot from it. But then I would go talk to experimental archaeologists and go through the process of brain-tanning leather or getting on a ship that they would have sailed on, and I just experienced it in the way that they're doing their research and experienced it more like people would have in the past too.

KK: Did you have a favorite experiment that you learned about or a favorite archaeologist you embedded with?

SK: There's a guy out in Utah who built a trebuchet — a giant medieval catapult. It was about 30 or 40 feet [9 to 12 meters] tall, I think. And we just spent a lovely day flinging these giant garden stones around at this palisade that he had built, as a stand-in for a fort, essentially. And we just spent a day flinging these huge stones at this fort and watching it smash in and splinter the wood and try to destroy this little fort. Getting to pull the trigger on this catapult — it was just like this majestic dragon coming to life, almost, as it started to fling these balls. And it was like a whip cracking of the sling as it would fling the stone out. That was just a really lovely memory, partly because everything worked properly that day.

A lot of the book was actually me floundering around, failing to complete the projects or figuring out what I was doing wrong. And I think that was a good learning method. I did learn a lot by flailing around, probably more than I would have had I gotten things correct the first time immediately. But it was nice when things went right every once in a while. And the catapult was a good example of that.

KK: That sounds so cool! And in the excerpt that we are publishing on Live Science from your book "Dinner with King Tut," you talk to people who used ancient Egyptian mummification techniques on a real human body. What did you learn from talking to these people? And did you get to try mummifying a body yourself?

SK: Not a body, but I did do a little mummification myself. I didn't know this before I started writing the book, but the Egyptians mummified a lot of animals, a huge variety of animals, dozens of different types, and on a big, big scale. There's one grave site they found with something like 4 million bird mummies. So there have been a fair number of archaeologists in modern times who have tried to — and succeeded in — mummifying different animals, even though the Egyptians didn't write down a whole lot about the process. We don't know if it was lost to time or if it was just sort of a guild secret where they didn't write things down. So they would do this to learn about the mummification process with animals.

But, of course, the thing that really intrigues us about ancient Egypt are the human mummies. And everyone thought we couldn't actually make a human mummy until two guys did in the '90s. It was one Egyptologist [Bob Brier] and the guy who was in charge of the Maryland state anatomy board [Ronn Wade], who got to decide where cadavers went that had been donated to science. He decided this was a worthwhile project.

The donor remains anonymous, but he was a 76-year-old man from Baltimore who had died of a heart attack. They went all out to be authentic for this project. They went to Egypt to get the mineral natron that they would have used to mummify him. They had ancient tools made, and they went through all the steps that were known in mummification and turned this person into a mummy.

KK: Did these researchers learn more than what is in the historical records? What did they learn from doing this themselves?

SK: It was a controversial project. People said, when you donate your body to science, that's not a blank check to do whatever you want. Some people called it horrifying. And some people said that they didn't think it had any scientific value. I understand the ethical concerns, but I don't think it's true that we didn't learn anything.

One thing that sticks out in my mind that I was surprised about is how they used authentic tools. Archaeologists have found obsidian blades with mummies — those are volcanic glass — and they found copper tools associated with them. So, when these guys were trying to open the body up initially, it turned out that the copper blades they had were not good at all. They could not get through the skin and the muscle of the abdomen very well. The obsidian tools turned out to be much better at that task, which surprised me. I wouldn't have thought that the stone tools would have been better than the metal tools. That's something we wouldn't have learned had we not gone through the process.

Also, the iconic look of the mummy: It has retracted teeth and sparse hair and a forehead pulled very tight. Bob Brier, the Egyptologist involved, had seen a lot of mummies, and he always wanted to know, do they look like that because they've been sitting in Egypt, a dry environment, for 3,000 years, or is it the mummification process that gives them that look? And he said that even after about five weeks, when they took a peek at the body, they could tell it had that classic iconic mummy look. He said it looked exactly like Ramesses the Great to him. So we did learn things about the mummification process through this that we just wouldn't have known otherwise.

KK: That's amazing that this controversial experiment produced new knowledge. You mentioned you mummified something — tell me about it.

SK: I did mummify a fish for the book. That was kind of a fun process, and it was a surprisingly easy thing to do. You can rub the oils in, wrap them up, include little spells like they did back then. But the basic process is just using natron — which is baking soda and salt — and you just put the fish or whatever you want to mummify underneath this. Then it just does the work on its own.

KK: Then I guess the real question is, did you eat that fish that you mummified?

SK: No, but it's sitting on my shelf still as a little memento. I did accumulate quite a nice collection of artifacts and things – stone tools I made, I opened and ate an ostrich egg. I made tapa or kapa — which is a type of Polynesian bark cloth. So I did get to do and make and take home a lot of cool souvenirs from this.

KK: That's so fun! And your book is a little different from some other popular science books because you include these fictional narratives based in archaeological and historical fact. In the introduction, you call them a "form of time travel." Tell me a bit more about why you chose this unusual structure for the book and what you hope readers will get out of that.

SK: What I really value about experimental archaeology is that it's pretty immersive, especially the sensory aspects of it. You do get to feel — to some degree, at least — that you are there and that you are doing the things that people back then were doing. I thought that fiction would allow me to take that even one step further and really get in the minds and be in the world that those people lived in. So you get to wake up where they did, eat the foods that they did, and experience their society. Something like religion or their beliefs in the supernatural or spiritual beliefs are not going to be amenable to experimental archaeology, but you can do that in fiction. And so it allowed me to take it one step further, and it was just fun to try and fun to write as well.

KK: Is experimental archaeology going to be something you cover more in a future book?

SK: I think I could do it if I wanted to revisit it because there were other cultures that, for various reasons, I decided to not include. People are doing work in ancient Greece, but that didn't make it into the book. I do have one chapter in sub-Saharan Africa tens of thousands of years ago, but that was the Cradle of Humankind. I could certainly do other aspects of that. There's definitely fodder out there for another book, especially as these techniques get more accepted. It has been heartening to see that people are more accepting of experimental archaeology, and even people on traditional digs now are running maybe an experiment or two. So they're not going all the way to experimental archaeology, but they're incorporating these practices.

It's just such a fun field. I really would encourage people to get involved with it and to try it out, because you can do a lot of basic things like gather acorns and try to make a recipe out of those. Or research some ancient Roman or Greek food and try to re-create that stuff ‪—‬ just little experiments and things you can do to get people excited about it and bring the past alive in a new way.

And I have a new book coming out in the fall called "The Museum of Lost Things: True Tales of Fabled Treasures, Legendary Cities, and Mythical Creatures That Vanished From History" [National Geographic, 2026]. It's about the greatest lost treasures in history and has some interesting archaeological angles in there.

KK: I'll look forward to reading that. Thanks for chatting with me!

Editor's note: This interview has been edited and condensed for clarity.

Ancient Egypt quiz: Test your smarts about pyramids, hieroglyphs and King Tut

In most areas of archaeology, excavators painstakingly dig layer by layer to reveal not just buried artifacts but also charred seeds, broken bones and microscopic grains of ancient pollen. This delicate process is followed by months of intensive lab work to study the newfound remains. But there is one kind of archaeologist that takes a different approach to understanding the past. Experimental archaeologists replicate how people did things in the past, using techniques they recreate from archaeological information and modern knowledge.

In his new book, "Dinner with King Tut: How Rogue Archaeologists Are Re-creating the Sights, Sounds, Smells, and Tastes of Lost Civilizations" (Little, Brown and Co., 2025), science writer Sam Kean explores the experimental side of archaeology. Through a series of ancient and modern vignettes, Kean discovers how Stone Age city dwellers kept their houses cool 9,000 years ago, how the Romans used needle and thread to style hair, and how bog bodies were formed in Iron Age Europe.

In this excerpt, Kean meets two men who used ancient techniques to diligently mummify a human body in an effort to understand how ancient Egyptians took care of their dead.

Related: Read our interview with Sam Kean on 'Dinner with King Tut'

Cultures throughout history have mummified their dead, and a handful still do today, but Egyptian mummies remain the most iconic. Unfortunately, the Egyptians wrote down virtually nothing about their embalming process. This leaves experimental archaeology as one of the few avenues available for understanding mummification, and several practitioners have indeed re-created mummies in modern times. In most cases, they work with animals, but a few intrepid souls have mummified human beings, most famously when Bob Brier and Ronn Wade did so in 1994.

Wade grew up wanting to be a mortician like his father. After a stint as a medic in the Vietnam War, he became an anatomist and eventually the head of Maryland's state anatomy board. Brier also has training in anatomy, but is an Egyptologist by training and passion. He's accumulated so many books on Egypt over his life that he rents a second apartment just to accommodate them. Brier and Wade selected their mummy from the pool of people in Baltimore who donated their bodies to science. Ultimately, they settled on a seventy-six-year-old Caucasian man who died of a heart attack. His identity remains secret, but a bit crassly, Wade nicknamed him E. M. Balm.

For authenticity's sake, Brier and Wade used replicas of pharaonic-era tools and materials, including linen wraps, an oddly wide wooden embalming table, and copper and obsidian blades — although they quickly abandoned the copper ones, which couldn't cut flesh well. Before starting on their mummy, they practiced one important step on other cadavers: extracting the brain. Instead of using full cadavers for this, they obtained some decapitated heads leftover from a medical school's plastic surgery class. ("They were looking a little weird," Brier recalls. "They'd had facelifts and such.")

From some scant references, Brier knew that Egyptian embalmers removed the brain by inserting a hooked rod through the nostrils, but the details were vague. Brier and Wade first tried scooping the brain out with such a rod, but the tissue proved too soft and wouldn't come out. They finally took to squirting water up the cadaver's nose, then used the rod to whisk the brain into a slurry. After that, it poured right out. "Like a milkshake," Brier says. "A strawberry milkshake to be exact."

Skills honed, the duo began making their mummy in May 1994. The first step involved removing his organs.

Different organs met different fates in Egypt. Unclear about the purpose of the brain, embalmers typically threw it away. The heart, in contrast, was left in situ [in place]; it was considered the seat of all thinking, emotion, and intelligence. Abdominal organs were carefully extracted and preserved. Following this protocol, Brier and Wade made a 3½-inch [9 centimeters] incision in their cadaver's abdomen and removed the spleen, liver, gallbladder, lungs, and twenty-two feet [6.7 meters] of intestines. Given their size, extracting the liver and lungs required some creative geometry and determined squeezing. The most difficult part involved detaching the lungs from the heart while working blind inside such a tiny hole.

With the organs removed, the pair cleaned the abdomen with palm wine and myrrh, then stuffed frankincense into the skull. This was an important ritual step to prepare the body for the afterlife, and also helped kill microbes and mask bad smells. Ancient embalmers used other sacred substances as well, often imported from Europe and Asia at great cost — pistachio resin, beeswax, castor oil. Ramses the Great's mummy had peppercorns from India shoved up his nose.

Next, Brier and Wade dehydrated the body using natron, a mineral of equal parts salt and baking soda that forms naturally in Egyptian wadis, or dry gullies. Like a sponge, natron sucks the moisture out of flesh, leaving it too dry to support bacteria, maggots, beetles, and other putrefying agents; the leftover tissue is essentially jerky. (Fully committed to authenticity, Brier dug the natron himself in Egypt, and recalls that sneaking hundreds of pounds of unidentified white powder through customs at JFK Airport was one of the more ticklish aspects of the project. Luckily, he was traveling with a film crew, and could hide the powder in suitcases amid their equipment.)

In their lab, Brier and Wade placed the mummy's spleen, lungs, liver, and intestines into bowls and covered them with natron. They also packed 29 linen bags of the powder into the body's empty torso, laid the body on top of 211 more pounds [96 kilograms], and dumped 583 additional pounds [264 kg] over it. They kept the body in Wade's old office, with the heat cranked up to 104 degrees F [Fahrenheit, or 40 degrees Celsius] and dehumidifiers running night and day to simulate Egyptian air.

Over the next five weeks, the natron on top turned crusty and brown from absorbing bodily juices, forcing Brier and Wade to crack through it with an iron rod. (Today Brier remembers the odor as acrid but not unpleasant, although news reports at the time say he and Wade donned surgical masks against the smell.) Regardless, the sight of the body beneath thrilled Brier. As it dries, the skin of mummies tightens and shrivels, especially on the face and scalp. The lips retract to reveal the teeth, and skin with less melanin turns brown-yellow. Brier always wondered whether those changes resulted from the immediate mummification process, or from several thousand years of weathering in Egypt's arid climate. One glance at his mummy and Brier knew the answer: even after five weeks, "he looked just like Ramses the Great," he recalls, with leathery skin, a beaky nose, and wispy hair sticking up. The embalming process, not time, made the iconic mummies we know today.

Beyond changing the body's appearance, the dehydration process left the limbs as stiff as tree branches, and dropped its weight from 188 pounds [85 kg] to just 79 [36 kg]. (Thirty-one pounds [14 kg] of that represented the removal of organs.) The organs drying in the bowls withered as well, which helped explain another mystery of Egyptian mummification: as other archaeologists have noted, embalmers typically placed the organs in so‑called canopic jars, funerary vessels with slim necks — so slim that it seemed impossible to fit the larger organs inside. But the natron shrunk them down enough to slip right in.

After removing him from the natron, Brier and Wade gave Mr. Balm a full body massage with lotus, cedar, and palm oils, another step that, while important ritualistically, also had pragmatic benefits — restoring flexibility to the joints, making the mummy easier to handle. This accomplished, they wrapped the body in linen bandages. (Embalmers in ancient times started with the hands and feet, wrapping each digit separately, then proceeded to the arms, legs, and torso. The penis was individually wrapped as well — or, if embarrassingly shriveled, a cod‑piece of stiff linen was bound in place.) At this point, they let the mummy dry for three more months in the arid office, which dropped its weight to 51 pounds [23 kg]. Afterward, they added several more layers of wrappings. In between the layers, they slipped magic amulets and scraps of papyrus with spells on them, a common practice in ancient times.

For the past three decades, the mummy has been lying in a metal casket in Maryland, stored at room temperature. Brier and Wade have partially unwrapped it twice to check for rot, but found nothing amiss. "He's dead and well," says Brier.

See how much you know about mummies with our mummy quiz!

On a Sunday afternoon in April, the main minibus terminal in Sukabumi, Indonesia, looked sleepy from the outside. But in an open space round the back, hundreds of men were gathered. Amid chatter and cigarette smoke, the air buzzed with excitement, for one of the region's biggest bird-singing competitions was set to begin, and a motorbike was among the prizes.

As the day progressed, dozens of songbirds were brought out for their 10-minute rounds, from tiny garden sunbirds and grey-cheeked bulbuls to larger oriental magpie-robins and orange-headed thrushes. Then the emcee announced the main event — the singing contest among the highly popular, strikingly handsome white-rumped shamas — and a hush fell over the crowd.

The shamas' owners murmured final words of encouragement and stepped away from their cages. Judges swept in with clipboards, assessing each bird for its song, ability to hold a steady tune, volume and showmanship. Soon it was down to a final two birds ... and then "Baby White" was crowned the winner amid cheers from the crowd.

Indonesians have a long-standing culture of keeping birds as pets, and songbirds are especially popular, prized by collectors for their melodious singing and colorful plumage. "I keep songbirds as a hobby, to relieve stress and also gain a bit of money," explained Harry Gunawan, a 78-year-old businessman and owner of 39 shamas, including the multiple prizewinning Baby White, while waiting for his new motorbike.

Gunawan's shamas are among an estimated 66 million to 84 million caged birds that are kept across Java, the island where 56 percent of Indonesia's population lives and one in three households owns birds. These include more than 3 million white-rumped shamas and 2 million oriental magpie-robins. Wild birds are believed to be better songsters; hence, many are trapped in forests then crammed into tiny crates, drainpipes and even plastic bottles, destined for pet markets in Jakarta, Surabaya and other big cities. Birds that survive the journey — estimates of mortality rates range from 30 to 80 percent — will spend the rest of their lives confined to cages.

This birdkeeping hobby, paired with the growing popularity of singing competitions, has already driven some species to extinction and many species — also threatened with habitat loss — are on the brink, a phenomenon dubbed "the Asian songbird crisis."

"The silent forest is really happening," says Agung Nur Haq, who is in charge of conservation at the Wak Gatak Songbird Rescue and Rehabilitation Center near Pontianak, West Kalimantan.

Experts warn that action must be taken quickly, or the consequences may be dire and irreversible. If nothing is done and populations can't recuperate, says Alexander Lees, a conservation biologist at Manchester Metropolitan University in the United Kingdom, we may experience an "empty forest syndrome," whereby forests appear intact and lush but are devoid of animals.

Birds in demand

The illegal bird trade is thriving elsewhere in southeast Asia, including Vietnam, Thailand, Malaysia and Singapore. But "Indonesia's songbird trade is one of the world's most prolific," says Chris Shepherd, a wildlife trade expert at the Center for Biological Diversity in Canada. "It's terrifying."

The biodiversity-rich nation is home to about 1,800 bird species — more than double the number found in the United States. Of those, one in five have been spotted in pet markets, including protected, endangered and endemic species (ones found nowhere else). These include the endangered black-winged myna and the Javan green magpie, of which fewer than 250 and 100 wild individuals, respectively, remain.

Estimates suggest that up to 30 percent of Indonesia’s population, some 90 million people, keeps between 164 million and 187 million wild-caught songbirds.

"There may be more birds behind bars than left in the wild," wrote Lees in an overview of the songbird crisis in Current Biology.

The fondness of Indonesians for caged birds stems from a centuries-old belief among the Javanese, the country's largest ethnic group, that a man is considered successful if he possesses five elements: a wife, a house, a vehicle, a ceremonial dagger and a bird. The bird symbolizes that he is in touch with his softer side, and can indulge in both work and leisure. In a 2025 study, researchers found that a bird's singing ability was the biggest driver of demand — after that, people preferred rare, endemic or unusual birds that flaunt one's status.

Singing competitions emerged in the 1970s as another reason to keep songbirds. These local or regional events are typically held monthly or weekly, involving up to 1,000 birds.

"The owners go home with, at the very least, tons of prestige, but more often lots of prize money, sometimes up to 10 years' salary," says acoustic biologist Benjamin Mirin, founder of the Creative Conservation Lab with Cornell University. Competitors also stand to win exclusive trophies, goats, motorcycles and even cars.

Mirin, who has been studying the songbird trade since 2018, says the events can be life-changing. "They're so popular and financially beneficial that they're accelerating the poaching of birds to the point where now the forests are falling silent."

Unfortunately, wild-caught birds are perceived to have better song quality and a wider singing repertoire than their captive-bred counterparts. As a result, competitions "have been driving the demand in certain species," says Serene Chng, a wildlife trade researcher at TRAFFIC, a nonprofit focused on reducing harmful and illegal trafficking of plants and animals.

An expert group formed by the International Union for Conservation of Nature has identified 52 species that are most impacted by trade in Asia. These include the straw-headed bulbul (known for its lovely duets) and the Bali starling (with its stark white plumage and electric-blue eye ring). Although Indonesian law forbids the capture and trade of more than 500 bird species, many of them songbirds, enforcement is weak, thanks to poor resources, corruption and other factors. Consequently, several species, including the Javan pied starling, are now locally extinct.

It's hard to predict what will happen to ecosystems if songbird species are wiped out en masse in Indonesia. Birds play important ecological roles: pollinating plants, dispersing seeds and helping with insect control. The Pacific island of Guam offers a cautionary tale: It lost nearly all of its songbirds after the brown tree snake, which preyed on the birds and their eggs, was accidentally introduced after World War II. Guam's forests shifted to what Lees has described as "a nightmarish alternative state as a spider-dominated ecosystem." It was, he says, "pretty catastrophic."

Indonesia is much larger and far less isolated, so "your starting conditions are not as bad," says Lees. "But if we don't recuperate some of those populations, then we can expect maybe similar sorts of downstream impacts."

A sanctuary

Government agencies have had some success in tracking down wild-captured birds but are reluctant to confiscate them because they lack a place to house them. This dilemma in West Kalimantan province, a hotspot for illegal bird trade activity, led to the establishment of the Wak Gatak sanctuary by the nonprofit group Planet Indonesia.

One of its key aims is to provide suitable facilities to encourage more frequent confiscations and rescues by authorities with Indonesia's natural resources and conservation agency, BKSDA, while ensuring the welfare of confiscated songbirds, says Abrar Ahmad, a technical advisor for terrestrial conservation at Wak Gatak.

The center, which sits on a leafy plot near the city of Pontianak, is worlds apart from the dark, cramped conditions birds endure when smuggled aboard a truck or ship. On a morning in April, visitors turn off a sleepy road and drive past the gates down a short muddy track. Dragonflies flit lazily through tall grass and a smattering of coconut, banana and durian trees sway in the distance. The facilities are modest: a small office block with light-filled aviaries.

Animals often arrive at Wak Gatak in an alarming state: Malnourished, with missing feathers, many appear fatigued or withdrawn, says Happy Ferdiansyah, Wak Gatak's head veterinarian. Some birds have wounds on their upper beaks from gnawing on cage bars, while others — especially if they're more territorial — suffer leg fractures from fighting with other birds in close quarters.

"A lot of them, 70 to 80 percent, die within the first two weeks. Their condition is very poor," says Ferdiansyah.

To avoid causing the birds further stress, his team conducts only a visual inspection of the new arrivals. Those that are obviously ill are transferred to the on-site clinic for treatment. The rest are transferred to cages in quarantine.

The birds receive vitamins, nourishment (an assortment of fruits, insects, sugar syrup and so on), in addition to enjoying more space — one or two individuals typically share an oven-size cage. They remain in quarantine for at least 14 days, a critical time period when diseases such as avian influenza and Newcastle disease tend to manifest, says conservation director Haq. To test for these and other issues, Ferdiansyah and his fellow vets analyze blood and stool samples, in addition to carrying out rapid antigen tests.

Once their health has been given the all-clear, the birds are moved to rehabilitation aviaries on the opposite side of the premises. These enclosures are much more luxurious: bathroom-size, dotted with green plants, with generous views of the surroundings and sky.

Here, stimulation is key, as is getting the birds comfortable with flying again. "The aviaries have different perches and plants for the birds to hop around or to hide in the bush," says Ferdiansyah. "We also do food enrichment like giving them live insects or putting the food in different places."

Only some birds are fit for release. Those that appear habituated to people are not good candidates; they may continue to approach humans and might teach non-natural calls to wild birds or just fail to communicate with them. The center, for example, currently houses four locally endangered and protected common hill mynas — glossy black starlings with heavy orange bills that are renowned for their intelligence and mimicry. When I visited, the birds happily wolf-whistled, chuckled and offered the traditional Islamic greeting "As-salamu alaykum," among smatterings of Indonesian chatter. These mynas have been at Wak Gatak for nearly a year and will remain there for the foreseeable future.

But for birds that are suitable to release, the center works with BKSDA to identify possible sites. Ideally, these would be forest lands in good condition, with abundant food and water, minimal human activity and few natural predators like civets and snakes, says Ferdiansyah. A local community that's supportive of conservation is a plus — increasing positive outcomes, such as survival and reproduction, by 10 percent, according to a 2023 study that analyzed 305 wildlife restoration projects in 80 countries.

Once a site is determined and permits are secured, Ferdiansyah and his team transport the birds — as they did at the end of April, taking 130 birds to a nature reserve seven hours north of Pontianak. At such sites, the team carries out what’s known as a soft release, placing the birds in a large makeshift cage that allows them to acclimate to their new surroundings. After four to 10 days, the team opens the cage, allowing the birds to fly away when ready. Team members stay on for up to two weeks, tracking the birds to make sure they're settling in problem-free.

It's rough, sweaty work, says Ferdiansyah, but highly rewarding. The center has so far helped 348 songbirds return to the wild. The April release is their largest to date, and included some crimson sunbirds and greater green leafbirds, the latter of which is endangered. Another 705 birds were seized in December from a ship at the local port in Pontianak. Within hours, most of the birds had died. But 36 are still recovering at Wak Gatak and 22 have been rehabilitated and released.

Nearly 3,000 birds from 45 species have passed through the center's doors since it opened in 2022. It’s proof that such a rehabilitation facility — the only one in Indonesia for the foreseeable future — can make an impact.

But given how many songbirds are in peril, its work is a drop in the ocean.

To slow the crisis, experts say it must be fought on multiple fronts, but above all, at its root: demand. It requires "thinking about how we can shift attitudes and behaviors to reduce pressure on wild populations," says Lees, who explores such measures in a look at the state of the world’s birds in the 2022 Annual Review of Environment and Resources. In 2023, the Wak Gatak team carried out a campaign across some of the city's billboards, discouraging people from joining songbird competitions. And in the coming months, they'll host a series of behavior-change workshops in two towns close to forests where birds are commonly poached and competitions are growing in number.

Shifting the needle will not be easy. Indonesia's songbird hobbyist groups are powerful — in 2018, they successfully petitioned to have five species downlisted from the national list of protected birds. Plus, government officials often take part in competitions themselves. In 2018, for example, then-president Joko Widodo presided over the President's Cup, one of Indonesia's most prestigious songbird competitions, even entering his own white-rumped shama.

Yet change is possible: Ferdiansyah himself kept four songbirds as a kid because they "sounded very nice" and he thought he could make them happy. But when he entered veterinary college, he realized the error of his ways and set the birds free.

This article originally appeared in Knowable Magazine, a nonprofit publication dedicated to making scientific knowledge accessible to all. Sign up for Knowable Magazine's newsletter.

Are you a bird nerd? Find out with our bird quiz!

This week's science news was filled with big discoveries from the world of the small, led by a physicist's creation of a mini-universe, which was designed so we can watch time emerge from within an isolated quantum system.

The experiment was performed using a Bose-Einstein condensate — a strange state of matter that consists of thousands of atoms blended into a single quantum object at near absolute zero (minus 273.15 degrees Celsius, or minus 459.67 degrees Fahrenheit). The system showed time speeding up, slowing down and even stopping, depending on what the system was doing.

Those weren't the only highbrow high jinks using a Bose-Einstein condensate we reported on this week. We also covered NASA's upgrade to its mini-fridge-sized laboratory on the International Space Station that will use the bizarre state of matter to probe the quantum world. Back on Earth, physicists also found that complex numbers aren't necessary for quantum mechanics to work and used quantum computers to create a rare material critical to nuclear fusion. And to stick with news from the small (and weird) things of the world, we also reported that scientists have created little diving suits to transform cockroaches into search-and-rescue cyborgs.

Arctic ice thickening shows promise

First experiment to thicken Arctic ice with seawater shows promise — but there's a big catch

The Arctic is the world's fastest-warming region, where sea ice is rapidly disappearing at a rate of 12.2% per decade.

The ice is crucial for maintaining stable sea levels and marine nutrient flows, and for reflecting solar radiation away from our planet, so its precipitous decline is deeply concerning. That's why one team of researchers turned to a surprisingly simple method to stem the ice loss: flooding ice sheets with seawater to thicken them.

The results, despite some major caveats, showed a lot of promise.

Discover more planet Earth news

—Extreme heat waves are making our cities buckle. Investing in urban nature is no longer optional.

—Colorful 'painting-like' ripples cover an ancient seafloor structure in the Bahamas — Earth from space

—'Uncharted territory': Record-high ocean temperatures confirmed for June as El Niño strengthens its grip

Life's Little Mysteries

Does fast charging damage your battery more than regular charging?

If you're as shamefully attached to your devices as I am, you may have wondered about the wildly differing times it can take for them to charge. So what's the science behind fast charging, and does it damage a device's battery more than regular charging does?

—If you enjoyed this, sign up for our Life's Little Mysteries newsletter

One of the oldest gravestones of a free Black person in the U.S. found

'One of the oldest gravestones of a free Black person in America' discovered in Boston

It was found amid photos of headstones during a restoration project at Boston's Granary Burying Ground — a gravestone with only one name, "Boston."

That's how a team of conservationists chanced upon the tombstone of Sebastian, a formerly enslaved man who died free in 1729 and chose the city's name as his own.

A search through the historical archives has produced a wealth of information about Boston's past, including his reputation as a hardworking handyman throughout the city, and his emancipation following the death of the man who held him in slavery.

"It's been there all along. We just had to go look and share the story," Michelle Wu, the mayor of Boston, said in a July 4 speech.

Discover more archaeology news

—100,000 years ago, one of the earliest Homo sapiens outside Africa was stabbed in the face, analysis finds

—6,000-year-old broken ribs discovered in Syria may be one of the oldest known cases of child abuse in the world

—Neanderthals and modern humans may have shared culture 59,000 years ago in Turkey, study finds

Also in science news this week

—New sodium metal battery design charges in just 4 minutes and retains its capacity for years

—Dirty 'button' unearthed by metal detectorist turns out to be a rare 900-year-old coin from Norway's last Viking king, Magnus Barefoot

—'Astronomers have to revise estimates': The Milky Way may be larger, heavier and more lopsided than we realized

—2,500-year-old tomb of a 'warrior prince' with chariot and helmet discovered on Italy's Adriatic coast

—Malaria had nearly been eliminated around a giant dam in the Amazon — but then it came roaring back. Experts just discovered why.

Science interview

'800 seconds for a sick visit': Some factors driving antibiotic resistance have nothing to do with biology, says medical sociologist Julia Szymczak

Antibiotic resistance continues to pose a growing danger across the U.S., with more than 2.8 million antimicrobial-resistant infections occurring in the country each year. Last week, we brought you a report from Live Science health editor Nicoletta Lanese, who visited Japan to investigate how that country is curbing its overuse of antibiotics.

Now, in the second part of a feature series into the fight against this "silent pandemic," Nicoletta interviewed medical sociologist Julia Szymczak to dig into the social and emotional drivers of antibiotic overprescription.

Something for the weekend

If you're looking for things to keep you busy over the weekend, here's a selection from our best opinion pieces, interviews, diagnostic dilemmas and crosswords that we published this week.

—Superintelligent AI in space could explain the Fermi paradox [Opinion]

—'It's more than a hope; it's a guarantee': The Vera C. Rubin Observatory's 10-year movie of the universe is about to 'blow our minds,' chief scientist Tony Tyson says [Interview]

—Diagnostic dilemma: A woman heard voices for years — but not because of psychosis [Diagnostic Dilemma]

—Live Science crossword puzzle #51: Largest rodent on Earth — 4 down [Crossword]

Science photo of the week

Secretive Chinese probe snaps first photo of Earth's mysterious 'quasi-moon' — and it may pose a big problem

It doesn't look like much, but this blurry, gray image is the first-ever close-up photo of one of Earth's temporary "quasi-moons" — a fast-spinning asteroid temporarily orbiting the sun in sync with our planet.

Of equal intrigue is the spacecraft that took the image: a secretive Chinese probe that is likely gearing up to land on the space rock and snag a sample ‪—‬ although an unexpected hiccup will make that more difficult.

Follow Live Science on social media

Want more science news? Follow our Live Science WhatsApp Channel for the latest discoveries as they happen. It's the best way to get our expert reporting on the go, but if you don't use WhatsApp we're also on Facebook, X (formerly Twitter), Flipboard, Instagram, TikTok, Bluesky and LinkedIn.

The patient: An 83-year-old man in Belgium

The symptoms: The man sought medical attention at a hospital because the muscles on one side of his face had weakened suddenly, causing it to droop — a condition called unilateral peripheral facial-nerve palsy. He had also recently had a fever, which had since resolved.

Tests run by the neurology department found the man had anemia, fatty liver disease and an enlarged spleen. Combined with his recent fever, these findings led the team to assume he had a viral infection. However, he tested negative for a variety of germs, including Epstein-Barr virus, which causes mono; cytomegalovirus; human immunodeficiency virus (HIV); and hepatitis A, B, C, and E.

The man's liver abnormalities hadn't resolved by one week later, but his facial-nerve palsy cleared following a 10-day course of a strong corticosteroid. But then, over the next month, the man's knees and ankles became stiff and painful, and his legs and feet — and occasionally his face, arms and hands — began to swell. He reported feeling generally unwell, he had gained 11 pounds (5 kilograms), and his urine had darkened even though he had been drinking more water than usual. All of these signs pointed to problems with his kidney function.

Besides the conditions uncovered on his recent medical examinations, the patient had long-standing high blood pressure, high cholesterol, an enlarged prostate and chronic obstructive pulmonary disease (COPD), for which he was taking medications. He had also been diagnosed with rectal cancer 20 years beforehand and received various treatments over the years. He and his wife of 50 years had been sexually inactive since that cancer treatment, he told his doctors.

What happened next: After weeks spent in and out of the hospital, the man went to an emergency room after his skin suddenly became intensely itchy. He had a red, scaly rash on his calves. A neurological exam revealed "normal motor strength, sensation, reflexes, coordination, and gait," the doctors wrote in a report of the case.

At the ER, the patient was questioned further about his medical history, at which point he told doctors that, during his military service as a young man, he'd had unprotected sex with multiple casual partners. He reported being treated for various sexually transmitted infections (STIs) during that time but had forgotten the specific diagnoses.

Tests revealed that the patient was anemic and that his urine contained blood and an abnormal amount of protein. Additionally, a test for autoimmune diseases found abnormally high levels of antinuclear antibodies, which target the control centers of cells that house DNA. Because the patient had recently had facial-nerve palsy, the doctors analyzed his cerebral spinal fluid — the clear fluid that surrounds the brain and spinal cord. This revealed elevated levels of white blood cells, which hinted at an active infection.

The diagnosis: While tests for HIV and tuberculosis came back negative, an assay for Treponema pallidum, the bacterium that causes syphilis, was positive, confirming that the patient had an active syphilis infection.

Syphilis infections can progress through four stages, each with different symptoms. If an infected person doesn't get effective treatment during the primary and secondary stages, the bacteria can go latent, sometimes for decades. And in a minority of cases, latent syphilis can awaken and cause a late, or tertiary, infection.

Based on his positive T. pallidum test, rash, general unwell feeling, abnormal liver results, high urinary protein count, leg swelling, facial drooping and swollen lymph nodes, the man's doctors diagnosed him with secondary syphilis with early neurosyphilis, in which the bacteria attack the nervous system.

The treatment: The patient had been given a single injection of penicillin before the test results confirmed that his infection had neurological involvement. He was subsequently given a 14-day course of intravenous penicillin, which is the recommended treatment for neurosyphilis, according to the case report.

The severe itching was treated with antihistamines, and he was prescribed diuretics to reduce the swelling in his legs. The rash, itching and swelling had improved by his one-month follow-up appointment, and his liver tests and urinary output had normalized.

Public health authorities were informed of the patient's diagnosis, and his wife was referred for testing. The case report does not note whether his wife tested positive for syphilis.

What makes the case unique: Secondary syphilis normally occurs within the first year of an untreated infection and only rarely develops after four years have passed. Normally, smooth, hard sores appear on the mouth or genitals during primary syphilis, and once those sores disappear, secondary syphilis sets in within months, if left untreated.

"Although the patient's history of multiple sexually transmitted infections as a young man prompted testing for syphilis, an exposure from that period would not be expected to explain his current presentation," his doctors wrote.

There's a possibility that the man had a latent infection that recently reactivated, perhaps due to the immune-suppressing effect of his recent steroid treatment. But you'd expect the reactivation to cause only symptoms of tertiary syphilis — like nervous system problems — not symptoms associated with secondary syphilis, like fever, rash and weight loss.

Therefore, exactly when the man contracted the infection is uncertain. "A more recent, unreported exposure must be considered," the doctors wrote.

It is also rare for syphilis to affect the liver and kidneys, occurring in less than 10% of cases, according to the case report.

For more intriguing medical cases, check out our Diagnostic Dilemma archives.

This article is for informational purposes only and is not meant to offer medical advice.

This article was first published Feb. 18, 2026.

Fast charging seems to be almost everywhere. Many smartphones can go from nearly empty to more than 50% charged in about half an hour, while some electric vehicles can add hundreds of miles of range during a quick charging stop.

But batteries aren't perfect; their capacity degrades over time. Given that fast charging delivers more power in a shorter amount of time, does fast charging damage batteries?

Scientists say the answer is yes, but it's more complicated than you might think. Fast charging can accelerate some types of battery degradation, but modern batteries are designed with safeguards to help limit the damage.

How does fast charging work?

Rechargeable lithium-ion batteries — the most common battery type in the world — work by moving lithium ions between two electrodes called a cathode and an anode. During charging, lithium ions travel through the battery and are stored in the anode until the battery is used again.

The main difference between fast charging and regular charging is how quickly those ions move. Compared with regular charging, which can take hours, fast charging can refill a battery in an hour or less.

"Regular charging applies a lower current, allowing lithium ions to intercalate [move into microscopic holes] into the anode gradually, which generates little heat and causes minimal mechanical stress," Zhiyuan Jiang, an associate professor in the Department of Chemical Engineering and Technology at Xi'an Jiaotong University in China, told Live Science via email. "Fast charging increases the current [and] power significantly to shorten charging time."

Not all batteries are designed for fast charging. A battery's ability to handle high charging speeds depends on its materials, internal structure and battery management system, Jiang explained. Fast-charging batteries often use specialized electrode materials or thinner electrodes and electrolytes that allow the lithium ions to move more easily. Manufacturers may also redesign the battery's internal architecture to reduce resistance and heat buildup.

Stanislaw Zankowski, a battery researcher at the University of Oxford, compared the process to traffic moving through a city.

"You could think about charging a battery as transporting people through roads, intersections and buildings," Zankowski told Live Science. "Fast charging is really a question of how efficiently you can move all that traffic without creating bottlenecks."

What type of damage could fast charging cause?

All lithium-ion batteries lose capacity over time, even when they are treated carefully. But fast charging can speed up some of the chemical processes responsible for that aging.

One of the biggest concerns is a process called lithium plating. During rapid charging, lithium ions may not have enough time to settle properly inside the anode. Instead, some lithium can accumulate as metallic deposits on the electrode's surface. These deposits can reduce the amount of lithium available to store energy, thereby lowering the battery's capacity. In extreme cases, the lithium can form needle-like structures called dendrites that puncture internal battery components and create safety hazards.

Fast charging can also generate more heat. Heat is a natural byproduct of electrical resistance in the battery. The faster a battery charges, the more heat it produces.

"For charging a small battery with a small current, that amount of heat will be also relatively small," Zankowski said. "So, it's not really a safety problem, but as we increase the size of the battery, the amount of current that we'll be pushing during charging and the amount of heat will also increase quite a lot. And as a result, we can't really charge larger batteries as quickly, mostly because of the safety margin."

Higher temperatures can accelerate chemical reactions that gradually degrade battery materials. In some extreme cases, overheating can cause batteries to swell, catch fire or even explode ‪—‬ a process known as thermal runaway.

Fortunately, most modern smartphones, laptops and electric vehicles contain sophisticated battery management systems that monitor voltage, current and temperature during charging. That's why you may get a heat warning from your smartphone if you leave it in the sun. If temperatures climb too high, these systems automatically slow charging to protect the battery.

Best tips for battery life

So what's the best way to protect a battery while charging it quickly?

Both Zankowski and Jiang emphasized that temperature is key. It's best to avoid charging devices in hot environments, such as inside a parked car or in direct sunlight. Extremely cold temperatures can also be harmful because they make it harder for the lithium ions to move through the battery.

"Ideally, the temperature range should be around 20 to 25 degrees Celsius [68 to 77 degrees Fahrenheit] for charging," Zankowski said. "So, just like a comfortable temperature for a human being, right?"

Experts also recommend that you avoid keeping devices like laptops constantly plugged in, as this can degrade battery performance. Jiang suggested implementing the "shallow charge, shallow discharge" habit.

"Keep your battery between 20% and 80% for daily use," he said. "It is not necessary to charge to 100% every time."

Can you match these ancient devices to their pictures? Find out with our computing quiz!

Early Christian communities in Sweden often buried children in the same grave with adults, but archaeologists have found that these individuals rarely shared close biological ties, raising the question of how medieval people interred their dead.

In a new study, researchers analyzed the DNA of 142 skeletons from three cemeteries in Sweden dating to the 10th to 14th centuries, focusing on collective burials in which two or more people were buried in the same tomb.

"We often assume that adults and children sharing a grave were parents and children or other close family members," study first author Maja Krzewińska, a paleogeneticist at Stockholm University, said in a statement. "In most cases, that was not what we found."

The researchers determined that most burials containing multiple individuals held both adults and children and that the people buried together were usually of the same sex — a woman buried with a girl or a man buried with a boy. But the DNA analysis held a surprise: People buried together rarely exhibited close biological kinship, the researchers wrote.

When Christianity spread across Scandinavia starting in the late 10th century, burial practices became more uniform. Graves were oriented east to west, and people were buried in a simple shroud without any grave goods. Baptized individuals were allowed to be interred in consecrated cemetery grounds, while babies who died before they could be baptized were excluded.

"We have previously analyzed a burial containing an adult and the remains of a fetus, which we believe represents an unbaptized individual," Krzewińska told Live Science in an email.

These unusual burial arrangements likely point to early Christian traditions. For instance, some of the children buried with adults in the new study may have been unbaptized. Normally ineligible for burial in the cemetery, the children may have been opportunistically interred with an adult to get around religious norms. Other burials may reflect unrelated people buried together in the spring after passing away in the winter, when burial in the frozen ground was impossible.

"We also believe, based on more distant genetic affinity, that some co-burials represent more distant family relations, or even non-biological kin group relations," Krzewińska said.

In early medieval Scandinavia, households often included extended relatives, servants, employees and enslaved individuals, the researchers wrote. While biological kinship played a large role in the organization of society, membership in the local Christian community may have been equally important in determining where and with whom to bury a deceased person.

"Archaeologists have debated the relationships between people buried together in this type of grave for a long time," study co-author Anna Kjellström, an archaeologist at Stockholm University, said in the statement. "Ancient DNA has finally given us the tool we have been waiting for to test these interpretations directly."

We are family

In addition to collective burials of unrelated people, the archaeologists discovered evidence that some families were buried within the same cemetery over several generations. One burial, known as Lady 56, was a Christian pilgrim who anchored three generations of relatives.

Lady 56 died when she was around 30 years old. She was buried with a rare scallop shell, a symbol of the apostle James, that she obtained after completing a pilgrimage to Santiago de Compostela, a town in northwest Spain on the edge of Christian Europe.

The researchers also identified Lady 56's kin group, which was of particular importance to the community and stretched over generations in the Västerhus cemetery, Krzewińska said. The DNA analysis revealed that Lady 56's parents, brother and daughters were also buried in the same cemetery, but in different places.

Västerhus was part of a wealthy landowner's farm from the 11th to 14th centuries, and the cemetery contained the remains of more than a dozen members of a biologically related group, many of whom were interred with members of a different kin group.

The DNA connections between the main Västerhus family and other kin groups in the cemetery support the special status of the main family. These close-kin burials highlight the importance of ancient-DNA testing, as different burials from the same time and region can follow very different traditions.

What do you know about Jesus Christ, the man? Test your knowledge of biblical archaeology with our Jesus Christ quiz!

A new upgrade to the International Space Station's (ISS) quantum laboratory is enabling NASA to probe the behavior of atoms further than ever before, the space agency has announced.

Combining the ISS's newly upgraded "Cold Atom Laboratory" with the near zero-gravity of low Earth orbit, scientists are attempting to understand the properties of so-called "ultracold" atoms in an environment impossible to replicate on Earth. The aim of the mission is to study how clouds of atoms behave at temperatures close to absolute zero (minus 459.67 degrees Fahrenheit or minus 273.15 degrees Celsius) — the coldest possible temperature in the universe, where atoms lose all their energy of motion.

"At the coldest temperatures, matter behaves drastically different from anything we have experienced," Jason Williams, project scientist for the Cold Atom Lab at NASA’s Jet Propulsion Laboratory in Southern California, which built the facility, said in a statement. "The wavelike nature of matter dominates, and ultracold matter can behave in ways that are not only unexpected, but that also enable extremely precise measurements of time, gravity, and motion. The lab has lots of tools — especially with this latest upgrade — to let us probe the nature of the universe."

Rule-breaking particles

Atoms and their subatomic particles are quantum mechanical objects whose behavior is fundamentally different from that of the large-scale world. For example, the laws of quantum mechanics predict that particles can be in more than one place at the same time (quantum superposition); can be mysteriously linked with each other over great distances (quantum entanglement); and move through spacetime as waves as well as moving like fixed, solid objects.

But observing these behaviors is notoriously difficult. Firstly, atoms are so tiny that if an atom were the size of a golf ball, then a human teeing one off would stand roughly as tall as the distance from Earth to the moon. Secondly, it’s impossible to isolate measurements of these behaviors for atoms in "normal" environments (like on Earth), as the desired quantum behavior is disturbed by energy from heat and gravity.

To overcome these challenges, the ISS's Cold Atom Laboratory — which is the size of a mini-fridge — uses lasers to cool gases of rubidium and potassium to just above absolute zero. At these temperatures, atoms form a state of matter known as a Bose-Einstein condensate, in which many atoms behave like a single wave of quantum matter.

Not only does this setup allow scientists to observe quantum behaviors on a much larger scale than that of single atoms, but the reduced gravity enables the condensate matter waves to expand and evolve undisturbed for much longer periods than would be possible on Earth.

This is the fourth major upgrade to NASA’s Cold Atom Laboratory since it arrived aboard the ISS in 2018. According to NASA, the significant improvements in this most recent upgrade include a redesigned magnetic trap to contain the cloud of atoms, improved atom sources, and better measurement capabilities.

Scientists launched these upgrades to the ISS in April 2026, and they have since been installed, switched on, and started making state-of-the-art measurements. As well as enabling novel tests of fundamental physics, measurements of these effects are critical in demonstrating future, space-based, highly precise quantum technologies related to positioning, navigation, timing, and gravity sensing. These technologies could one day enable astronauts to navigate on the moon without GPS and produce high-precision maps of Earth’s gravity.

"In the previous century, there was a quantum revolution that led to lasers, cellphones, and MRIs for medical imaging," Ethan Elliott, deputy project scientist at NASA’s Jet Propulsion Laboratory in California said in the statement. "We’re performing Quantum 2.0 – direct manipulation of large quantum states – and we hope for similar gains in quantum technology by advancing this science in orbit."

Researchers in China have announced a radical sodium metal battery (SMB) design that can fully charge in just four minutes and will retain its capacity for years of use.

SMBs are a form of ultrafast-charging, stable batteries that scientists say could one day be a cheap alternative to today's lithium-ion (Li-ion) batteries, which rely on geographically concentrated metals and easily catch fire. SMBs also differ from sodium-ion (Na-ion) batteries in that they use a metallic sodium anode rather than a graphite or hard carbon anode.

However, SMBs remain largely theoretical because they are prone to a type of degradation known as dendrite formation. This is when the sodium ions passing through the electrode deposit onto the highly reactive, pure-metal sodium anode in spiky, stalagmite-like structures. Over time, this forms a bridge between the cathode and the anode, short-circuiting the battery.

Dendrite formation is especially common in sodium batteries because sodium is a highly reactive metal. When charge runs through a Li-ion, Na-ion, or sodium metal battery, the anode always reacts with the electrolyte to form an oxide layer known as the SEI. This is typically 10 to 50 nanometers thick — about as wide as a small virus — but generally harmless. But with sodium, the SEI often cracks, forming bumps that attract sodium ions, which pile into dendrites.

Now, researchers say they have solved this issue by using a tough, quasi-solid gel electrolyte — dubbed Sn-FB QSE — which strengthens the battery against punctures and provides a semisolid internal structure that prevents dendrites from forming. They outlined their findings in a study published May 21 in the journal Nano-Micro Letters.

To confirm the longevity of this approach, the scientists charged and discharged the battery for over 6,000 hours without dendrites short-circuiting the battery. They also noted that when they charged the battery from zero to 100% capacity in just four minutes, it retained electrical charge, measured in milliampere-hours per gram (mAh g^–1), of 80.1. This is the equivalent of around half that retained in Li-ion batteries.

When charged at a slightly slower rate of zero to 100% in 20 minutes, the battery retained 90% of its charge capacity over 2,000 cycles — matching the theoretical limits for Li-ion batteries, the scientists said in the study. This slower speed lowered the cost and improved the safety.

This is notable because the scientists achieved this in the new battery while still charging it quicker than Li-ion batteries can be charged. This is relevant because charging speed remains a sticking point for battery deployment in electric vehicles (EVs). The fastest charging EV today is the BYD Denza, which the Chinese automaker says can go from 10-70% in just five minutes. But this requires highly specialised, 1MW proprietary chargers.

Most EVs charge much slower — Tesla representatives say its Model 3 can recharge from 10-70% in approximately 15 minutes using Tesla’s own 250kW flash chargers, but representatives from the EV routing platform Zapmap say the same vehicle will take 90 minutes to charge to 80% on 50kW chargers.

Indeed, most batteries used for modern technologies, such as smartphones and EVs, are Li-ion. However, Li-ion batteries are expensive to produce because they contain the hard-to-obtain metals lithium and cobalt, and they are prone to catching fire.

Increasingly, battery manufacturers are looking to bring Na-ion batteries to commercial scale because they are cheaper and safer. However, they are heavier and larger than Li-on batteries.

SMBs are the focus of intense research because they theoretically combine the best of both types of batteries. Because SMBs use a sodium anode, rather Na-ion batteries that use graphite or hard carbon anode, they are lighter and cheaper to produce and therefore much more comparable to Li-ion in terms of size and weight. They are also safer because they operate using sodium ions, which are bulky and cannot flow to breaches in a battery wall fast enough to cause thermal runaway. This is the self-sustaining chain reaction that causes batteries to ignite when damaged.

If the issues of dendrite formation and stability at lower temperatures can be resolved, replicated and scaled, SMBs could reshape the economics of battery deployment over the next decade, the scientists said.

SMBs could be excellent choices for EVs in public transport or within commuter cars, the scientists belive, because although they have lower ranges than Na-ion and Li-ion vehicles do, they charge faster. However, they won't be available for some time, either in vehicles or smaller devices like consumer electronics.

That's because devices like smartphones are subject to harsh temperature changes that affect the internal chemistry of batteries that rely on gel electrolytes. The research must first be replicated before manufacturers feel comfortable using pure sodium metal in place of well-understood graphite configurations.

The Canon EOS R6 III is Canon's newest full-frame camera. We absolutely loved the R6 II when we reviewed it, and the Mark III's improved 32.5MP resolution, 7K video capability and CFexpress compatibility build on that strong foundation to take this camera from the beginner and enthusiast level straight into the serious intermediate camera category.

We primarily tested it for wildlife photography with Canon's 100-300mm f/2.8L IS USM lens, but the R6 III is such an impressive all-rounder, it can easily turn its hand to astrophotography, sports or event photography, too.

Canon EOS R6 III: Design

• Comfortable grip to accommodate larger lenses
• Identical layout to previous model
• One SD card slot, one CFexpress card slot

Existing Canon users will feel right at home with the Canon EOS R6 III, as the build and button layout are nearly identical to the R6 II, and similar to many other R-series bodies. We tested the R6 III with the Canon RF 100-300mm f/2.8L IS USM lens and found it comfortable to get a good grip on, and it feels satisfying in the hand, especially when paired with bigger lenses.

The LCD screen and viewfinder are exactly the same as the Mark II, but there are a couple of small differences elsewhere in the design. The R6 III now has a CFexpress Type B card slot as well as an SD card slot, allowing for faster workflows and data transfer. However, considering this camera sits in the more intermediate level, we have to question whether two SD slots would be more useful for the majority of users, especially because CFexpress cards are more expensive. Plus, we used fast SD cards during our tests and encountered no problems at all with the write speed or buffer.

Canon EOS R6 III: Performance

• An absolute joy for wildlife photography
• 32.5MP sensor is a very welcome improvement over the Mark II
• Autofocus and subject detection are accurate and sticky

The Canon EOS R6 III features more advanced AI-powered autofocus, which enables it to track people, animals and vehicles more easily compared with the Mark II. When we were photographing animals at a zoo, the autofocus was generally very good, although there were a few occasions when the camera got confused. The focus jumped between the giraffe’s eyes, nostrils and ossicones, and the camera couldn’t quite figure out what to focus on, even when the animal was facing towards the camera with the eyes in view. There were also a few unfortunate occasions when the camera would find and track an "eye" on the — how do we put this — wrong end of the animal. Generally, though, it was fast and accurate.

In our review of the previous model, the Canon EOS R6 II, we said, "Considering it's the next step up from the Canon EOS R8, we'd hoped for a bump in resolution. Matching the 32.5MP resolution of the crop-sensor Canon R7 would have given the R6 II an even sweeter spot between the R8 and the 45MP powerhouse Canon EOS R5 II." It seems Canon was listening, as the 32.5MP sensor in the Canon EOS R6 III sits perfectly between the beginner and professional lineups. The images are clean, detailed and not too noisy, making this camera a compelling choice for photographic styles that require excellent resolution without excessive noise.

Canon EOS R6 III: Functionality

• Canon claims battery life allows for around 620 shots (CIPA) — we took around 6,000
• Blackout-free burst shooting up to 40FPS
• Pre-continuous shooting

For wildlife photography, blackout-free shooting enables you to follow the subject a lot easier as it's moving, to ensure you can keep the subject centered and maintain your composition. What's more, with the R6 III, you can shoot up to a massive 40 frames per second (FPS) blackout-free, which is perfect for fast-moving wildlife. (Keep in mind, this means you need to hone your timing to avoid the "spray and pray" method and end up with tons of photos of the exact same moment). This is one feature of a wildlife camera that makes a big difference.

The R6 III also features pre-continuous shooting, where it'll record up to 20 frames (approx 0.5 seconds) before the shutter is fully pressed — another useful feature for wildlife and sports photographers who need to capture fleeting moments.

The Mark III uses the upgraded LP-E6P battery, shared with the R5 II, which offers significantly more shots per charge than the LP-E6NH in the R6 II. That said, it means that if you're upgrading from a different Canon model, your current spare batteries won't work in the R6 III, so you'll need to invest in a few spares. However, we managed to get more than 6,000 photos without having to swap out the battery, so you won't need to worry about the battery running out unless you're shooting all day for multiple days.

Should you buy the Canon EOS R6 III?

We can confidently say: yes, you should buy it. It seems to tick all the boxes for a lot of shooting scenarios, whether it's your main wildlife camera or a backup body for weddings. The 32.5MP sensor produces beautiful images with minimal noise and accurate color reproduction; it's lightning fast with a 40FPS burst speed and can capture up to 7K 60p video. However, if you're looking for a more serious pro-level camera, perhaps opt for the R1 or R3 instead.

If this camera isn't for you

A years-long malaria control campaign in the Brazilian Amazon nearly eliminated the disease from a city — but then cases rebounded. Now, scientists think they've uncovered why.

The campaign took place in northern Brazil during the construction of the Belo Monte Dam in the Xingu River, one of the largest hydroelectric dams in the world. From 2013 to 2017, the initiative slashed annual malaria rates from more than 1,200 cases to fewer than 60. But the program ended, and within a few years, infections had rebounded to more than 700 cases a year. This time, they were concentrated in the rural communities surrounding the river in the city of Altamira.

In a study published Thursday (July 9) in the journal GeoHealth, scientists analyzed 15 years of malaria surveillance records alongside satellite images of forests around Altamira. Earlier studies have pointed to deforestation and dam construction as a driver of malaria because they can provide habitats for mosquito larvae, which inhabit the forest edge. In Altamira, large stretches of rainforest have been cleared for cattle ranching, logging and settlement along the Xingu River in the decades since the region was first opened up by road-building, leaving a patchwork of cleared land pressed up against the remaining forest.

However, the study found that the malaria resurgence wasn't simply a result of how much forest had been cut down. Instead, cases tracked most closely with the forest edge, the boundary where intact forest meets cleared or open land. There, mosquitoes get everything they need to thrive: shade from the tree line, sunlit pools of standing water for their larvae, and people living or working close by.

The findings highlight how the environment contributes to malaria risk, suggesting that maintaining surveillance in these high-risk landscapes could be just as important as driving cases down in the first place.

"What made Altamira compelling was that the timing gave us something rare, close to a natural experiment," study co-author Eloise Skinner, an epidemiologist and postdoctoral research fellow at the University of Queensland in Australia, told Live Science in an email. The results of that natural experiment could help Brazil in its efforts to eliminate malaria from the country in the next decade, she said.

A program tied to temporary funding

The researchers tracked malaria trends before, during and after the construction of the Belo Monte Dam. Before construction began, malaria was already a persistent problem in the region; Altamira city alone reported more than 1,200 cases a year.

As thousands of workers moved in, local health authorities and the dam's developers rolled out an intensive control program that involved spraying insecticides indoors, using mosquito nets, and deploying rapid diagnosis and treatment when cases did emerge. The goal was to head off outbreaks spread by Nyssorhynchus darlingi, the mosquito that carries the malaria-causing parasite in the Brazilian Amazon.

Mosquitoes pick up the parasite that causes malaria by feeding on the blood of infected people, and they can then spread that parasite to others they bite. Treating infected people quickly can help break that chain of transmission.

Cases plummeted despite the influx of workers, but once construction wrapped up and the program lost its funding, malaria came back.

To understand what drove the resurgence, the researchers combined three streams of data. Case records came from Brazil's national malaria surveillance system and covered 150 health centers in Altamira over 15 years. The team layered on temperature, forest cover and rainfall data, since both shape how favorable an area is for mosquito breeding and how efficiently the malaria parasite develops inside mosquitos. Plus, they added an estimate of travel time between each cluster of cases and the nearest town, as a proxy for how easily people and the diseases they carry might move around.

From the observations, the forest edge consistently emerged as the strongest predictor of increased malaria cases. For every 1% increase in the perimeter of the forest edge, malaria cases rose by roughly 0.7%; for every 1% increase in Altamira's population, who are located at the forest edge, cases rose by about 1.4%.

The rebound wasn't evenly distributed. Before the dam was built, most of Altamira's malaria cases came from clusters inside the city itself. Afterward, that pattern flipped: by 2020, the roughly 700 annual cases were concentrated almost entirely in remote, rural clusters near forest edges. Meanwhile, Altamira's urban center stayed comparatively protected, much as it had during construction.

"When the funded program wound down, malaria came back to the communities that are hardest for the health system to reach," Skinner said. "The city stayed protected, most likely because fast diagnosis and treatment are easier to deliver and keep going in a town."

That leaves the same communities exposed twice over, Skinner said. The places that are already the hardest to reach with health services also sit where the ecological risk is the highest.

But this pattern could point to solutions. The resurgence didn't scatter unpredictably. It came back to the same kind of place — rural communities at the forest edge — each time. That's the kind of risk that can be anticipated in the future.

Brazil aims to eliminate locally acquired malaria by 2035. Skinner said Altamira's near elimination of the disease, and its rebound within a few years of the control program ending, is a warning for that effort. When a community contains a strong environmental driver for malaria, like forest-edge ecosystems, stopping a control program short is sure to let the disease climb back.

"Because the resurgence wasn't diffuse, we can predict where malaria is likely to return first," Skinner said. "The message for a 2035 goal isn't only that elimination needs sustained investment. It is that where the environment drives risk, that risk is predictable, and planning for it from the start is what lets the money go where it matters most."

A metal detectorist in Norway dismissed a rare 900-year-old silver coin as a button, before researchers realized it was a one-of-a-kind piece linked to Magnus Barefoot (also known as Magnus Berrføtt), the warrior ruler often called Norway's last Viking king.

The coin, found in a field near Utstein Monastery in southwest Norway, dates to Barefoot's reign from 1093 to 1103. It is the first coin of its type ever discovered on Norwegian soil, according to a December 2025 translated statement from the University of Stavanger Museum of Archaeology.

"It is a fascinating thought that we may be just one large treasure find away from having a completely different view of Magnus Berrføtt's coinage as well, and it underlines the importance of all new discoveries that are made," museum representatives said in the statement.

The button that wasn't

The metal detectorist, Morten Eek, found the object in April 2025. It came from the plow layer in the soil, about 4 to 6 inches (10 to 15 centimeters) below the surface.

One side looked bright and silvery, but the other was covered by copper and had a dark spot in the middle, giving it a button-like appearance. Eek took it home and placed it with other buttons, worn modern coins and pieces of scrap metal he had collected.

It was only months later, when Eek showed his treasures to his fellow metal detectorists, that they noticed the silver side looked like a medieval coin. Its design resembled an illustration in the 1865 reference work "Norge's Coins from the Middle Ages," by C.I. Schive.

The detectorists then contacted the University of Stavanger Museum of Archaeology, where researchers took a closer look.

A coin with a second life

To the experts, the coin seemed strange because someone had altered it after it was minted. A copper plate had been placed over one side, and the coin's outer edge had been folded around it. Two rounded notches on the edge show where a chain or loop may have been attached, suggesting the coin was later worn as jewelry.

Researchers could have removed the copper plate to see what was underneath, but doing so would have damaged the object's fragile state.

The artifact's unique transformation reveals "something about people's relationship to what was initially a coin," museum representatives said in the statement.

To investigate the coin's covered side, the team X-rayed it. The scan revealed a griffin, a mythical creature with the body of a lion and features of a bird of prey. The motif has sometimes been interpreted as the lion of St. Mark, a Christian symbol, but the museum noted that the animal on these coins closely resembles a griffin. In medieval Christian art, griffins were used to symbolize Christ's dual nature as both human and divine.

The visible side revealed a "cross-over-cross" motif, with double-lined arms and small semicircles or bowl shapes at the ends. The pairing of the cross and griffin is what makes the coin so rare.

"Two-sided coins with the motif combination of griffin and cross over cross are only known from four copies," the statement said, with one coin from the Sandur hoard, found in the Faroe Islands in 1863, and three others from Denmark's Mørstad hoard, which was found this past spring and contains nearly 5,000 coins.

The rarity of such coins "may tell us something about the extent of Magnus Berrføtt's minting," museum representatives said in the statement.

In total, about 100 coins, spread across 12 discoveries, are known from Magnus Barefoot's reign, according to the museum. That makes every new example valuable for understanding how coins were produced and circulated in Norway in the late Viking Age and early Middle Ages.

Who was Magnus Barefoot?

Magnus Barefoot is sometimes called Magnus Barelegs, thanks to the kilts he wore. He became king in 1093 after the death of his father, Olav Kyrre (also called Olaf III of Norway), whose reign was remembered as a relatively peaceful period. Barefoot followed a different path. Like his grandfather Harald Hardrada, the Norwegian king killed at the Battle of Stamford Bridge in 1066, Barefoot built his reputation through warfare.

Barefoot spent much of his reign campaigning overseas. He sought to extend Norwegian power across the western sea routes, including the Isle of Man and parts of the Irish Sea. The museum noted that he was associated with the saying that a king was meant "for honor and glory, and not a long life." His death reflected this, as he died at around age 30, in 1103, when he was ambushed and killed during a campaign in Ireland.

The coin points to more than Barefoot's military ambitions. According to the museum, it also reflected one of his domestic reforms. Earlier Norwegian rulers had reduced the silver content of their coins, but Barefoot restored a high silver standard, with coins that were around 90% silver.

Whether the coin was lost at the Utstein Monastery during Barefoot's lifetime is impossible to know. Because it was turned into jewelry at some point, it may have circulated for years, or even generations, after it stopped being used as money.

See how much you know about ancient norsemen with our Viking quiz!