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Orcas’ Social Skin-Care Routine Uses Kelp as a Tool

How H5N1 Went from an Illness in Wild Birds to a Global Pandemic Threat

Rubin Observatory’s First Images Just Unveiled the Universe as We’ve Never Seen It Before

Elon Musk Launches the Robotaxi—Can Tesla’s Cybercab Share the Road with America’s Myth of the Highway?

First Near-Complete Denisovan Skull Reveals What This Ancient Human Cousin Looked Like

Hurricane Hunter Flights Improve Hurricane Forecasts, But Trump Budget Cuts Could Threaten Them

How Does a Gravitational Slingshot Work?

What Is Testosterone Replacement Therapy, and Is It Safe?

Here’s How Plastic Bag Bans Are Keeping Trash off Shorelines

Humpback Whales Are Blowing ‘Bubble Rings’ at Boats. Are They Trying to Communicate?

Gaia, Europe’s Galactic Cartographer, Is Gone But Not Forgotten

SpaceX’s Starship Explodes in Texas During Preflight Testing

The Weather Expert Who Answered the $64,000 Question

Supreme Court Skrmetti Decision Permits Ban on Gender-Affirming Care for Children

The Massive Ordnance Penetrator Bomb Israel Wants to Destroy Iran’s Fordo Nuclear Facility

When Wildfire Smoke Arrived from Canada, Federal Safety Experts Were Gone

When Baboon Dads Stick Around, Their Daughters Live Longer

Mysterious Link between Earth’s Magnetism and Oxygen Baffles Scientists

Why Can Beef Be Cooked Rare but Chicken Can’t?

Why Working Out Is Good for Your Gut Microbiome

Flesh-Eating ‘Screwworm’ Parasites Are Headed to the U.S.

Scientists Find Universe’s Missing Matter in Intergalactic ‘Cosmic Fog’

Wind and Solar Energy Are Cheaper Than Electricity from Fossil-Fuel Plants

Google AI Grant to iNaturalist Prompts Community Outcry

Why the Climate Warming Goal of 1.5 Degrees C Isn’t a Lost Cause—Even If We Overshoot It

Why Testosterone Therapy Could Harm Some Men, though It Could Help Others

Why Some Black Holes Keep ‘Burping’ Light after Eating a Star

The Fast Fashion Backlash Is Fueling a Sustainability Revolution

Seeking Sustainable Fashion and Cracking a Greenland Mystery

Science Crossword: Throwing Shades

Readers Respond to the March 2025 Issue

Poem: ‘Prayer to Fireflies’

Math Puzzle: Fill the Polygon

July/August 2025: Science History from 50, 100 and 150 Years Ago

Is It Possible to Treat Psychopathy Before It Starts?

Hotter Nights after Scorching Days Threaten Heart Health and Mental Well-Being

Greenland’s Ice Sheet Collapse Could Be Closer Than We Think

Denmark Let Amateurs Dig for Treasure—And It Paid Off

Contributors to Scientific American’s July/August 2025 Issue

American Education Demands a Fact-Based Curriculum, Not Religious Ideology

A Beginner’s Guide to Ethical and Sustainable Fashion

What Is Your Cat Trying to Say? These AI Tools Aim to Decipher Meows

How Drone Swarms Work—From Iran’s Shahed Attack to Ukraine’s Operation Spiderweb

What I Wish Parents Knew about Social Media

Extreme Heat Is the Biggest Threat to Insurers and Businesses

Who Is on RFK, Jr.’s New Vaccine Panel—And What Will They Do?

Your Brain Is Glowing, and Scientists Can’t Figure Out Why

Truly Intelligent AI Could Play by the Rules, No Matter How Strange

Mathematicians Hunting Prime Numbers Discover Infinite New Pattern for Finding Them

See Vera C. Rubin Observatory’s First Images Live with These Watch Parties