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Scientific American

Something extremely weird is happening to our galactic neighbor. Scientists think they know why

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Modern rocketry turns 100—and NASA says the best is yet to come

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There might be less water on the moon than we’d hoped

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NASA's Perseverance Mars rover discovers even older lost rivers at Jezero Crater

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COVID probably killed 150,000 more people in its first two years than official U.S. tolls show

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This overlooked organ may be more vital for longevity than scientists realized

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The Iran war disrupts global helium supply and artificial intelligence chipmakers

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Nebraska is battling its largest wildfires in history. Worse may be yet to come

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The math that explains why Y2K is back in fashion

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Beyond weight loss—how the GLP-1 story is evolving

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These fish know when you’re watching them

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An asteroid just exploded above Ohio with the force of 250 tons of TNT

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Physicists discover a 'charmed' new particle

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Americans’ trust in the CDC’s vaccine recommendations declines markedly under Trump

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What do hundreds of gravitational-wave events reveal about the universe?

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What are the best foods for a hangover, scientifically?

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The case for timing cancer treatments to daily circadian rhythms

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New tests and alert systems spot kidney disease before irreversible damage

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How drugs like Ozempic are revolutionizing kidney treatment

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A silent immune attack on the kidneys afflicts many people. New treatments could make early diagnosis lifesaving

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SpaceX reaches milestone of 10,000 Starlink satellites in orbit

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The real reason Ireland has no snakes

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Why there is a distressing rise in kidney disease

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Universe in chaos, Earth’s kids oddly fine!

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The kids are all right

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The false positive paradox explains why you misjudge risk

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The autism spectrum isn’t a sliding scale; 39 traits show the complexity

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The Pentagon is backing nuclear waste recycling for long-lasting military power sources

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Scientists reveal why Rocky Mountain lakes are turning green

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Scientists built a tickle robot to solve one of biology’s strangest mysteries

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Science crossword: Disappearing act

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Readers respond to the December 2025 issue

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Poems: Math limericks

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Newly diagnosed kidney patients struggle with heavy burdens, from dialysis to distress

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New drugs and treatments transform kidney care

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More kidney patients are having healthy babies after years of discouragement from doctors

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Math puzzle: Tricky calculation

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How the corpse flower evolved its bizarre traits

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How does kidney disease actually work?

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Galaxies without dark matter mystify astronomers

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Can testosterone boost a woman’s sex drive?

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April 2026: Science history from 50, 100 and 150 years ago

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Medical cannabis isn’t an effective treatment for anxiety, depression or PTSD, new research shows

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Maryland’s crabs are gluttonous cannibals, decades-long study finds

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Judge temporarily blocks key parts of RFK, Jr.’s effort to overhaul U.S. childhood vaccines

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Why blizzards, heat waves, tornadoes and floods are all hitting the U.S. this week

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Landmark offshore wind farms come online in the U.S.

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Deadly campus meningitis outbreak in the U.K. kills 2, sickens many more

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Brain implant allows people who are paralyzed to type using their thoughts at speed of texting

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As AI keeps improving, mathematicians struggle to foretell their own future

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