
How Your Brain’s Nightly Cleanse Keeps It Healthy
Washing waste from the brain is an essential function of sleep—and it could help ward off dementia
How Your Brain’s Nightly Cleanse Keeps It Healthy
Washing waste from the brain is an essential function of sleep—and it could help ward off dementia
Why Hurricanes like Erin Trigger Rip Currents Hundreds of Miles Away
Could AI Really Kill Off Humans?
What Happens When an Entire Generation of Scientists Changes Its Mind
Spellements: Tuesday, August 19, 2025
NASA’s James Webb Space Telescope Discovers New Moon of Uranus
U.S. Cuts Antarctica’s Only Research Icebreaker Ship under Trump Budget Squeeze
180 Years of Standing Up for Science
The Surprising Science behind Your Favorite (and Least Favorite) Scents
One Year after Scientific American’s First Issue, the Solar System Grew by a Planet
180 Years of Standing Up for Science
Jigsaws: SciAm Cover Art
Wordology: Terms from the Archive
Can Peanut Allergies Be Cured?
What Happens When an Entire Generation of Scientists Changes Its Mind
Create as many words as you can!
Stretch your math muscles with these puzzles.
The Secret to the Strongest Force in the Universe
Why Aren’t We Made of Antimatter?
Sam Kean’s New Book Dinner with King Tut Explores the Wild World of Experimental Archaeology
This Hormone-Free Pill Could Finally Expand Birth Control Options for Men
A Meteorologist in Congress Fights for Climate Science
Here’s Why Rabbits Are Sprouting Tentacle Horns
Rabbits spotted with hornlike growths on their face in northern Colorado are doing better than they look
What Happens When an Entire Generation of Scientists Changes Its Mind
Total reversals in scientific thinking are rare—but earth-shattering
Chikungunya Outbreak, Glacial Outbursts and a New Human Ancestor
China is having a fast-rising chikungunya outbreak in a place that has never had one before.
I Gave My Personality to an AI Agent. Here’s What Happened Next
A large language model interviewed me about my life and gave the information to an AI agent built to portray my personality. Could it convince me it was me?
Why This Seabird’s Superpooper Lifestyle Is Amazing Scientists
The first detailed observation of the bathroom habits of Streaked Shearwaters at sea leave scientists with a surprising load of questions
First 3D Images of Human Embryo Implantation Reveal New Details of the Process
Analyzing embryo movements in uteruslike environments could offer clues to improving the success rate of in vitro fertilization