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Scientific American

The Arctic Is in Dire Straits, 20 Years of Reporting Show

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New Flu Variant May Be Triggering Spike in Severe Disease

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RFK, Jr.–Backed Lyme Disease Conspiracy Theory May Be Probed under New Bill

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Scientists Devise New Plan to Study the Most Exciting Rock on Mars

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Math Puzzle: Wrangle the Rectangles

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How to See Interstellar Comet 3I/ATLAS as It Swings by Earth One Last Time

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What Your Sleep Profile Reveals about Your Health

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These Orcas Are on the Brink—And So Is the Science That Could Save Them

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The Hype behind Expensive Probiotic Supplements

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Science Crossword: Pointing South

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Science Carries On. Here Are Our Top Topics for 2026

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Readers Respond to the September 2025 Issue

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Poem: ‘Large Hadron Collider,’ ‘Maxwell’s Demon’ and ‘Music for the Heat Death of the Universe’

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Mysterious Bright Flashes in the Night Sky Baffle Astronomers

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Meet Your Plastic Pal

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Meet Your Future Robot Servants, Caregivers and Explorers

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January 2026: Science History from 50, 100 and 150 Years Ago

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Interoception Is Our Sixth Sense, and It May Be Key to Mental Health

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Heart and Kidney Diseases, plus Type 2 Diabetes, May Be One Illness Treatable with Ozempic-like Drugs

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Global Warming Could Skew Reptile Sex Ratios and Lead to Extinctions

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