Most people trust scientists to test new ideas on animals or in controlled labs. But some researchers decided that the best test subjects were themselves. These scientists put their own bodies at risk ...

Explore 25 human experiments too disturbing to ignore. From Tuskegee to Nazi camps, discover the shocking medical atrocities that shaped modern ethics. Lea ...

Tiny lab-grown replicas of human tissue are helping scientists understand what deep space really does to the body.

(via Cleo Abram) In the middle of the desert, miles from any city, are two HUGE concrete tubes. They’re part of a giant machine running the most precise experiment humans have ever built… ...