Jack A. Goldstoneis the Hazel Professor of Public Policy at George Mason University and received his Ph.D. from Harvard University. He has won major prizes from the American Sociological Association and the Historical Society for his research on revolutions, population, and political conflict. His 2010 essay in Foreign Affairs, The New Population Bomb has received world-wide attention. A Phi Beta Kappa visiting lecturer, Goldstone has authored or edited ten books and published over one hundred articles in books and scholarly journals. His latest books are Why Europe? The Rise of the West 1500ndash;1850(2008) and Understanding Revolutions(forthcoming).