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Scientific American

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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RNA May Be Common throughout the Cosmos, New Study Suggests

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Getting a COVID Vaccine while Pregnant Slashes Risk of Premature Birth, Major New Study Finds

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How Rising Rates of Uninsured Children Will Increase Pediatric Cancer Deaths

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Videos Show Hummingbirds Jousting Like Medieval Knights in Rare Mating

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2025 Nears Climate Heat Record, Mpox Variant Discovered, and Hobbit Extinction Explained

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Trump Officials Keep Comparing the U.S.’s Vaccine Schedule to Denmark’s. They’re Missing the Point

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How Conifers and Christmas Trees Secretly Shaped U.S. History

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Why Humanoid Robots and Embodied AI Still Struggle in the Real World

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New Cell Transplant Therapy Restores Insulin Production in Patient with Type 1 Diabetes

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What Is 'Spoofing'? How a U.S.-Seized Oil Tanker Reportedly Tried to Evade Detection

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Health Experts Slam Possible FDA ‘Black Box’ Warning for COVID Vaccines

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Photos Reveal Moths Sipping Tears from a Moose

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What Time Is It on Mars?

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AI as the New Empire? Karen Hao Explains the Hidden Costs of OpenAI’s Ambitions

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COVID Vaccines Slashed Kids’ ER Visits by 76 Percent, Study Finds

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U.S. Approves First Device to Treat Depression with Brain Stimulation at Home

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Before Flowers Existed, Ancient Cycad Plants Lured Insects with Heat

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U.S. Sunscreens Aren’t Great. The FDA Could Soon Change That

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Measles Outbreaks Accelerate as U.S. Inches Closer to a Disease Tipping Point

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Killer Whales and Dolphins May Team Up to Hunt Salmon

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Teen AI Chatbot Usage Sparks Mental Health and Regulation Concerns

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People Are Using TikTok to Sell Endangered Animals to Eat

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Beeple’s Art Basel Robot Dogs Satirize Musk, Zuckerberg and Our AI Future

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Uterine Fibroids Significantly Raise Risk of Heart Disease

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Scientists Explain How mRNA COVID Vaccines May Rarely Cause Myocarditis

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NASA Loses Signal from Critical Mars Orbiter

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MERS, a Deadly Coronavirus, Resurfaces in France for First Time in 12 Years

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Ancient Humans Were Making Fire 350,000 Years Earlier Than Scientists Realized

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Improved ‘Terminator’ Sun Model Could Change Space Weather Forecasting

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How Animals Form Unlikely Alliances to Keep Predators Away

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Can NASA Bring Mars Rocks Back to Earth?

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Earthquake Science and Fiction Collide in Tilt

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RFK, Jr., Questions Safety of Approved RSV Shots for Babies

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