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Human Missions to Mars Must Search for Alien Life, New Report Finds

NASA’s JWST Spots Most Ancient Supernova Ever Observed

Pompeii House Frozen Mid-Renovation Reveals Secrets of Roman Cement

OpenAI’s Secrets are Revealed in Empire of AI

Black Hole Caught Blasting Matter into Space at 130 Million MPH

This Weekend’s Geminids Meteor Shower Should Be Spectacular

Space-Based Data Centers Could Power AI with Solar Energy—At a Cost

Mathematicians Crack a Fractal Conjecture on Chaos

Breakthrough in Digital Screens Takes Color Resolution to Incredibly Small Scale

2025 Likely to Tie for Second-Hottest Year on Record

AI Slop Is Spurring Record Requests for Imaginary Journals

Chernobyl’s Shield Guarding Radioactive “Elephant’s Foot” Has Been Damaged for Months

Watch Lava From Hawaii’s Kilauea Volcano Obliterate a Webcam

Tsunami Warnings Issued in Japan after Magnitude 7.6 Earthquake

Vitamin K Shot Given at Birth Prevents Lethal Brain Bleeds, but More Parents Are Opting Out

Infrasound Tech Silences Wildfires before They Spread

Vaccine Controversies and Measles Outbreaks, Space Pollution, Puppy Power

Death by Fermented Food

Why Are ADHD Rates On the Rise?

How Close Are Today’s AI Models to AGI—And to Self-Improving into Superintelligence?

Why Leftover Pizza Is Actually Healthier: The Science of ‘Resistant Starch’ Explained

Is a River Alive? A Conversation with Robert Macfarlane on Nature’s Sovereignty

Was the ‘Star of Bethlehem’ Really a Comet?

Plastic Pollution Will More than Double by 2040, Yielding a Garbage Truck's Worth of Waste Each Second

What If the Moon Were Cheese? John Scalzi’s Latest Book Has the Answer

CDC Vaccine Panel Scraps Guidance for Universal Hepatitis B Shots at Birth

Daniel H. Wilson on Finding a Native Take on Traditional Alien Invasion Stories

Extremophile ‘Fire Amoeba’ Pushes the Boundaries of Complex Life

China’s Explosive Zhuque-3 Test Previews the Global Race for Reusable Rockets

Aluminum Is Crucial to Vaccines—And Safe. Why Are CDC Advisers Debating It?

Telecom Fiber-Optic Cables Measured an Earthquake in Incredible Detail

Cosmic Magnification Is One of the Universe’s Weirdest Optical Illusions

How Zuranolone, a Fast-Acting Drug, Might Help Those Suffering with Postpartum Depression

CDC Vaccine Panel in Disarray over Hepatitis B Vote

U.S. Man Dies of Rabies after Receiving Infected Kidney Transplant

Scientific American’s Best Nonfiction of 2025

Scientific American’s Best Fiction of 2025

AI Chatbots Shown to Sway Voters, Raising New Fears about Election Influence

New Book for Young Readers Brings the Stories of 10 Remarkable Women to Life

China’s CO2 Emissions Might Have Finally Peaked

The Black Death May Be Linked to a Mysterious Volcanic Eruption

Can We Image Alien Earths? This Newfound Object Could Show the Way

Scientists Pinpoint Gene in Sperm That May Be Key to Male Infertility

NASA’s Next Chief, Jared Isaacman, Gives Answers in Senate Grilling

Autonomous Deep-Sea Robots to Lead New Search for Missing Flight MH370

Scientists Just Tore Up a Major Particle Physics Theory

Satellite Megaconstellations Are Now Threatening Telescopes in Space

The Scientific American Staff’s Favorite Books of 2025

Scientific American’s Best Fiction and Nonfiction Picks for Science-Minded Readers

Trump’s MRI Is Not Standard ‘Preventive’ Care, Say Experts