One of the key scientific challenges is the puzzle of human cooperation. Why do people cooperate? Why do people help strangers, even sometimes at a major cost to themselves? Why do people want to punish others who violate norms and undermine collective interests? Reward and punishment is a classic t[...]

"California on the Breadlines" is the compelling account of how Dorothea Lange, the Great Depression's most famous photographer, and Paul Taylor, her labor economist husband, forged a relationship that was private - they both divorced spouses to be together - collaborative, and richly productive. La[...]