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Scientific American

Ancient geology could insulate Iran's nuclear centrifuges under Pickaxe Mountain from bombing

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Tansplanted testicular tissue grew sperm in an infertile patient

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Why environmental groups are suing over SpaceX’s land swap deal

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Why don’t insects live in the ocean?

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Humans may have spoken 10 times as many languages 2,000 years ago

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Why Tom Hiddleston finds Pompeii so haunting—and so human

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China’s Kimi K3 and the rise of open-weight AI models

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2026 Fields Medals go to four young mathematicians

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Do animals act weirdly during a solar eclipse? Or do we?

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Watch orcas smashing fish to smithereens, possibly for fun

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U.S. pledges $5 billion to boost AI in government-backed scientific research

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Long-lost coral reefs rediscovered off the coast of Africa

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What OpenAI’s rogue agent really did in the Hugging Face hack

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A huge cosmic object could force astronomers to rethink what a moon is

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These whales are the only ones that flip upside down. Now we know why

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OpenAI admits its agent went rogue and hacked AI start-up Hugging Face

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Mesmerizing NASA time-lapse reveals Mars’s craters, polar ice caps and deserts

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How a Futurama plotline led to a totally new math proof

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Rare double supernova discovered hiding in Jellyfish Nebula

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Rare footage reveals elusive Arctic bobtail squid mom with clutch of eggs

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This tiny, forgotten organ could help us live longer, healthier

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Inside the race to spot wildfires before they spiral out of control

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A SpaceX rocket is about to crash into the moon—scientists will be watching

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The Southern Delta Aquariids and Alpha Capricornids meteor showers are about to peak

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Neanderthals may have been just as smart as modern human peers

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Psychology researchers know why The Odyssey transcends time

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America is embarking on a risky experiment with GLP-1s and aging

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Accidental mix-ups of sounds reveal how the brain produces speech

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Why New York State imposed a data center moratorium

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U.S. cities have the worst air quality in the world right now—here’s how to stay safe

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See unprecedented images of Sunda clouded leopards, the ‘ghosts of the forest’

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What’s the longest total solar eclipse?

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Permanent daylight savings is bad for Americans’ health—here’s what science says could be better

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Cyclospora outbreak linked to iceberg lettuce supplied to Taco Bell

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Ancient Egyptian princesses were ‘powerful’ weapon users, new analysis suggests

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SpaceX’s latest Starship launch attempt ends in a scrub

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A super-Earth exoplanet’s leaking helium could be evidence of a complex atmosphere

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Speeding may be costing drivers far more than a ticket

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U.S. approval of giant ‘space mirror’ satellite alarms astronomers

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FDA approves cholesterol pill more powerful than statins

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Watch SpaceX’s Starship Flight 13 launch tonight

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Scientists discover a ‘remarkable’ new monkey species with orange lips and a froglike roar

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How to avoid getting cyclosporiasis—and why washing lettuce may not be enough

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Mathematicians are closing in on the hidden order inside chaos

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Trump’s latest CDC chief pick Erica Schwartz faces Senate confirmation hearing

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Indonesia’s new capital is changing the Borneo rainforest forever. Science is listening to the change

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See the first x-rays of humans taken in space

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Astronomers just accidentally spotted the faintest exoplanet ever seen from Earth

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The Perseid meteor shower aligns with a total solar eclipse this year—here’s how to see it

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