There May Be a Ninth Planet (And It’s Not Pluto)

Caltech astronomer Michael Brown has proposed the existence of a ninth planet, the existence of which would explain the strange orbits of six KBOs. 
Project Implicit Racial Prejudice

Project Implicit Reveals Your Hidden Prejudice

Professor Anthony Greenwald invented the Implicit Association Test that can tap into our implicit feelings about race. What happens when people take it?