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The Latest Breaking News from Live Science

NASA astronauts Suni Williams and Butch Wilmore were carried away on stretchers after return from space. Here's why that's normal.

When astronauts return from a prolonged visit to space, they are often carried out of their capsules and placed on stretchers. The 'stranded' astronauts Sunita Williams and Butch Wilmore were no exception. Here's why.

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Venomous snake with 3 fangs may be the 'most dangerous death adder in the world'

A death adder at an Australian wildlife park found to have three fangs that all produce deadly neurotoxic venom.

LiveScience

What's the oldest lake on Earth?

The oldest lake in the world dates back about 25 million years and is also the world's deepest and most biologically diverse lake.

LiveScience

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AI analysis of 100 hours of real conversations — and the brain activity underpinning them — reveals how humans understand language

An AI model trained on dozens of hours of real-world conversation accurately predicts human brain activity and shows that features of language structure emerge without being coded in.

LiveScience

Do sperm really race to the egg?

It's commonly thought that sperm "race" to the egg, with the winner fertilizing it. But is this really the case?

LiveScience

Why is it still so hard to make nuclear weapons?

Scientists have been building nuclear weapons for more than 80 years, but crafting this technology remains a challenge.

LiveScience

Science news this week: Blood moon and a mysterious mummy

March 15, 2025: Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend.

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Refuge from the worst mass extinction in Earth's history discovered fossilized in China

The End-Permian mass extinction killed an estimated 80% of life on Earth, but new research suggests that plants might have done okay.

LiveScience

How do fitness trackers measure your heart rate?

Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings.

LiveScience

'The most shameful form of execution': Han warriors found dismembered in 2,100-year-old mass grave in Mongolia

Genetic analysis of skeletons in a mass grave in Mongolia has revealed they were soldiers in the Han-Xiongnu Wars more than two millennia ago.

LiveScience

People find AI more compassionate than mental health experts, study finds. What could this mean for future counseling?

People find AI more compassionate and understanding than human mental health experts, a new study shows. Even when participants knew that they were talking to a human or AI, the third-party assessors rated AI responses higher.

LiveScience

Neanderthals, modern humans and a mysterious human lineage mingled in caves in ancient Israel, study finds

A newly excavated cave in Israel holds burials and artifacts suggesting that multiple human species commingled and shared ideas there during the Paleolithic.

LiveScience

How does rowing affect your heart, and is it different to running?

Rowing machines and treadmills do not challenge your cardiovascular system in the same way, so what is the science behind it?

LiveScience

Epigenetic 'scars' on the genome can be passed down by grandmothers, study finds

In a story of collaboration and community, researchers identified intergenerational epigenetic changes caused by war and trauma in Syrian refugees.

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Most ancient Europeans had dark skin, eyes and hair up until 3,000 years ago, new research finds

A new study charts the genetics of skin, hair and eye color in Europe over 45,000 years.

LiveScience

Quantum-inspired storage can store 100s of terabytes of data on a tiny crystal — with plans to make them into much larger discs

Scientists have found a way to store hundreds of terabytes of data onto a tiny crystal, with plans to scale this up to a disc-sized device that can be compatible with modern computing.

LiveScience

A giant extraterrestrial 'wave' hit Earth 14 million years ago — and may have dramatically altered our planet's climate

Our solar system's journey around the center of the Milky Way takes it through varying galactic environments, and one may have had a lasting impact on Earth's climate, according to a new study.

LiveScience

We may finally understand how metformin lowers blood sugar, animal study finds

The common diabetes drug metformin works partly by excreting sugar from the bloodstream into the intestines, where gut bacteria then convert it into chemicals that improve the insulin response.

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LiveScience

Megalodon may have grown up to 80 feet long — far larger than previous estimates

New study suggests megalodons may have grown 15 feet longer than some previous estimates, had enormous babies, and didn't look like supersized great white sharks.

LiveScience

Was medieval armor bulletproof?

The metal suits worn by knights during the Middle Ages were originally designed to protect against weapons such as swords. But could medieval armor also stop bullets?

LiveScience

Science at a crossroads: Dispatches from Friday's 'Stand Up for Science' rallies across the US

Our science journalists reported on the Stand Up for Science rallies held in New York City and Raleigh, North Carolina.

LiveScience

28,000-year-old Neanderthal-and-human 'Lapedo child' lived tens of thousands of years after our closest relatives went extinct

Researchers used a novel method of radiocarbon dating to figure out the age of the Lapedo child, who had both Neanderthal and human traits.

LiveScience

Is there really a difference between male and female brains? Emerging science is revealing the answer.

Brain scans, postmortem dissections, artificial intelligence and lab mice reveal differences in the brain that are linked to sex. Do we know what they mean?

LiveScience

'Let's just study males and keep it simple': How excluding female animals from research held neuroscience back, and could do so again

Neuroscience research has only recently begun to prioritize the inclusion of both male and female lab animals in studies. Could we see that shift reverse?

LiveScience

Powerful 'equinox auroras' may arrive soon: Why changing seasons can bring the best northern lights

Expect an uptick in aurora sightings near the spring equinox on March 20, as celestial geometry swings in favor of geomagnetic disturbances.

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