How to transplant a head
An Italian surgeon hopes to perform the first-ever head transplant. Is he a genius or a crank?
10 things you didn't know about Albert Einstein
Could gravity save Antarctic ice?
The math behind the world's great bird migration routes
How fetal tissue is used in medical research
Does language reinforce the gender pay gap?
Metal as light as styrofoam and as strong as titanium — and 5 other amazing new materials
How a Nobel winner foiled the führer
Why we still collect butterflies
A brief history of air pollution
A modern-day Edison
This controversial farmer may have revolutionized soil