Health
Is This New Swim Stroke the Fastest Yet?
The surprising performance and physics of the fish kick.
Will Coffee Cure You or Kill You?
Drip coffee may have a more positive impact on heart health than coffee made in a French press.
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?