The smallest control system of vision in mammals has been mapped -- a discovery that opens entirely new insights into how our vision works and how it can be affected by disease.

The May issue of Scientific American takes you on a deep-sea mining mission, explores dark comets and examines an invisible threat to the food we eat ...

See which stars got the most votes from PEOPLE readers in our Most Beautiful poll, a week before we unveil the World's Most Beautiful person! Emma Stone, Oprah Winfrey and Gayle King and Bretman Rock ...