Evolution & being good

Dacher Keltner, a psychologist at UC Berkeley, and the author of Born to Be Good: The Science of a Meaningful Life uses Darwin's work as a jumping off point to explain that human emotions, from spontaneous bursts of laughter to a sympathetic blush, are not only signs of evolution, but also the keys to understanding our ability to be happy and bring out the good in other.   My conversation with Dacher Keltner: