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Scientific American

What’s the most massive star in the universe?

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The real science (and the fun fiction) behind Project Hail Mary

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Influential vaccine advisory panel ACIP may be ‘disbanded’ after lawsuit, says former vice chair

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What animal are you? Humans and animals tend to like the same mating calls

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When did plate tectonics on Earth begin? New research finds some of the earliest clues

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How the Project Hail Mary directors brought science to the big screen

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Drug retatrutide helps people lower blood sugar and lose weight, clinical trial results show

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The world’s happiest countries report calls attention to youth well-being

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Try these language puzzles from North America’s biggest linguistics competition

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The math of March Madness brackets

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Gerd Faltings, mathematician who proved the Mordell conjecture, wins the Abel Prize at age 71

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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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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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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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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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