JOSHUA GREENE is the John and Ruth Hazel Associate Professor of the Social Sciences and director of the Moral Cognition Lab in Harvard University s Department of Psychology. His research has been supported by the National Science Foundation, the National Institutes of Health, and the MacArthur Foundation. He s appeared on Charlie Rose and Scientific American Frontiers, and his work has been featured in the New York Times, Discover Magazine, WNYC's RadioLab, and NPR's Morning Edition.