A graduate of Amherst College, Joseph E. Stiglitz received his PHD from MIT in 1967, became a full professor at Yale in 1970, and in 1979 was awarded the John Bates Clark Award, given biennially by the American Economic Association to the economist under 40 who has made the most significant contribution to the field. He has taught at Princeton, Stanford, MIT and was the Drummond Professor and a fellow of All Souls College, Oxford. He is now University Professor at Columbia University in New York and Chair of Columbia University's Committee on Global Thought. He is also the co-founder and Executive Director of the Initiative for Policy Dialogue at Columbia. Stiglitz helped create a new branch of economics, "The Economics of Information," exploring the consequences of information asymmetries and pioneering such pivotal concepts as adverse selection and moral hazard, which have now become standard tools not only of theorists, but of policy analysts. In 2001, he was awarded the Nobel Prize in economics for his analyses of markets with asymmetric information, and he was a lead author of the 1995 Report of the Intergovernmental Panel on Climate Change, which shared the 2007 Nobel Peace Prize. His most recent book, The Three Trillion Dollar War: The True Cost of the Iraq Conflict measures the war's opportunity cost to Americans.