What Is Thimerosal? Why Most Vaccines Don't Contain Mercury Anymore
Thimerosal, which contains an organic compound of mercury, has mostly been phased out as a preservative for vaccines. Here's how we know it is safe, and why we still use it in some vaccines given to adults
See Vaccine Recommendations Backed by Science in These Handy Charts
Orgasms Trigger Colors in People with Sexual Synesthesia
Spellements: Wednesday, June 25, 2025
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Why Dairy Farmers Were Surprised by Bird Flu Cases in Their Herds
Use Summer Break to Build Closer Bonds with Your Children
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?
How Bird Flu Became a Human Pandemic Threat
Testosterone Therapy Is Booming. But Is It Actually Safe?
Exercise Isn’t Just for Your Muscles—It’s Great for Your Gut, Too
RFK, Jr., Fires CDC Vaccine Panel, Oceans Are Acidifying, and Pangolins Face Newly Understood Threat
See Vaccine Recommendations Backed by Science in These Handy Charts
These graphics will guide you through science-based vaccine guidelines for children and adults
How to Keep Your Home Cool in Extreme Heat
When extreme heat arrives, here are science-based tips to keep your home cool, from the most efficient way to use air conditioning to strategic uses of fans
Trump Administration Ousts National Science Foundation from Headquarters Building
Employees at the National Science Foundation say they’ve been blindsided by a plan for the Department of Housing and Urban Development to take over their offices
When Does Consciousness Emerge in Babies?
Answering the question of when consciousness emerges is deeply tied to the mystery of what it actually is and how it can be measured
Orgasms Trigger Colors in People with Sexual Synesthesia
Scientists are just beginning to document sexual synesthesia, a phenomenon that can bring consciousness-altering washes of color and fantastical scenes at the moment of orgasm
To Make Better Choices, Understand How Your Brain Processes Values
The brain weighs factors based on their importance to oneself and one’s social world as part of a complex calculation that shapes behavior
