How do you know if you're eating the proteins your body truly needs? Here's the difference between essential and non-essential amino acids.

For centuries, the bubonic plague was thought to be the prime cause of the Black Death. What do the modern studies say about this?

Pixar's new film "Soul" is light and approachable, despite weighty themes. It raises questions about the identity of oneself.

The field of psychology is seeing more robust research techniques than before, with focus on positive psychology. What led to these changes?

Eight-time presidential candidate and noted conspiracy theorist Lyndon LaRouche has died. What makes a conspiracy theory? Also, can paranoia be good for us?