Health
The Man Who Drank Cholera and Launched the Yogurt Craze
Ilya Metchnikoff laid the foundation for modern probiotics.
Yes, You Can Catch Insanity
A controversial disease revives the debate about the immune system and mental illness.
The Impossible Physiology of the Free Diver
The amazing underwater athletes are rewriting the science of the body.
Why Egg Freezing Is an Impossible Choice
I don’t want to surrender to a lottery. But will I regret not playing?
Did Grief Give Him Parkinson’s?
These identical twins led virtually identical lives—with one tragic exception.
What to Eat After the Apocalypse
Engineer Joshua Pearce explains how to feed 7 billion people after a global catastrophe.
Take Light, Not Drugs
How light therapy can treat disorders from depression to Alzheimer’s disease.