Is Happiness All in the Head?

From NPR:

http://www.npr.org/templates/story/story.php?storyId=4839134

Two scientists look at the science behind happiness and satisfaction. What does it really mean to be happy? What does your brain really want?

Guests:

Daniel Nettle, author of Happiness: The Science Behind Your Smile; lecturer in psychology, Division of Psychology, Brain and Behavior at the University of Newcastle in Britain

Gregory Berns, author of Satisfaction: The Science of Finding True Fulfillment; associate professor of psychiatry and behavioral sciences at Emory University; associate professor of biomedical engineering at Georgia Institute of Technology in Atlanta