共找到 20 条结果
The Toba supereruption 74,000 years ago was so massive it may have plunged Earth into years of darkness and cold, leading some scientists to believe humanity nearly went extinct。 Yet archaeological evidence from Africa and Asia suggests early humans were far more resilient than once thought。 Instead of disappearing, some communities adapted with ne
As more sex workers quit the industry, some are having to navigate tough questions around consent and the “afterlife” of work they no longer want to be associated with
Biohacker Bryan Johnson recently bragged about his girlfriend's “top 1%” vagina as the at-home vaginal microbiome test industry is thriving。 But experts are skeptical
Fur seals may look like they’re simply resting after exhausting hunting trips at sea, but their bodies are secretly working overtime。 Scientists discovered that hours after returning to land, the seals’ heart rates suddenly surge — sometimes doubling — as they recover from the intense physical stress of deep diving。 The findings suggest that seals
Famous for helping build Apple’s iPhones, Foxconn just suffered another cyberattack, highlighting the perils of warehousing some of the world’s most valuable data
Centuries ago in England, hats weren’t just accessories—they were statements of power and rebellion。 Refusing to remove a hat could challenge authority, even in courtrooms and before kings。 People valued their hats so deeply that robbery victims sometimes begged to keep them over money
In a breakthrough experiment, scientists directly imaged how particles pair up in a system that mimics superconductors。 Instead of behaving independently, the pairs moved in a synchronized, dance-like pattern—something never predicted before。 This suggests a major gap in the classic theory of superconductivity
Astronomers using the James Webb Space Telescope have spotted something that shouldn’t exist—at least not so early in the universe。 A massive galaxy, formed less than 2 billion years after the Big Bang, appears to have no rotation at all, a trait usually seen only in much older, evolved galaxies。 This challenges current theories that young galaxies
As blood stem cells age, their lysosomes become overactive and damaged, triggering inflammation and weakening the body’s ability to regenerate healthy blood and immune cells。 By calming this cellular “overdrive,” researchers restored the stem cells’ youthful function, dramatically boosting their ability to regenerate and produce balanced blood cell
A group of undergraduate students pulled off something remarkable: they built their own dark matter detector and used it to probe one of physics’ biggest mysteries。 Working with limited resources but plenty of creativity, they designed a stripped-down experiment to hunt for axions — hypothetical particles that could make up dark matter
A new kind of memory device may finally solve the problem of overheating and battery drain in electronics。 By shrinking components to an extreme scale and redesigning their structure, researchers found a way to reduce energy loss instead of increasing it。 The result is a tiny memory unit that improves as it gets smaller—something once thought impos
Tyrannosaurs may be famous as fearsome apex predators, but new research reveals a more opportunistic—and slightly grim—side to their behavior。 Using high-resolution 3D scans, a researcher identified precise bite marks on a massive tyrannosaur foot bone, showing that a smaller tyrannosaur had fed on the remains of a much larger relative over 75 mill
Curiosity has detected a surprising variety of organic molecules on Mars, including compounds tied to the chemistry of life。 Some of these molecules may be billions of years old, preserved in ancient clay-rich rocks that once held water。 One standout find resembles building blocks of DNA, raising exciting questions about Mars’ past
Scientists are grappling with a cosmic mystery: why does the Universe behave differently on massive scales compared to our own solar system。 While distant galaxies reveal clear signs of something bending the rules of gravity—often attributed to dark energy or a hidden “fifth force”—everything nearby seems to follow Einstein’s playbook perfectly
Scientists revisiting mysterious 540-million-year-old microfossils from Brazil have overturned a major idea about early animal life。 What were once thought to be trails left behind by tiny worm-like creatures are now believed to be fossilized communities of bacteria and algae — some with remarkably preserved cells and organic material still intact
A mysterious cosmic explosion has astronomers buzzing, as a strange event may hint at an entirely new kind of stellar cataclysm。 After detecting ripples in space-time, scientists spotted a fast-fading red glow that initially looked like a rare kilonova—the kind of collision that forges gold and uranium。 But just days later, the signal shifted, beha