Matthew E. Kahn is a Professor at the UCLA Institute of the Environment, the Department of Economics, and the Department of Public Policy. He is a research associate at the National Bureau of Economic Research. Before joining the UCLA faculty in January 2007, he taught at Columbia and the Fletcher School at Tufts University. He has served as a Visiting Professor at Harvard and Stanford. He holds a Ph.D. in Economics from the University of Chicago. He is the author of Green Cities: Urban Growth and the Environment (Brookings Institution Press 2006) and the co-author of Heroes and Cowards: The Social Face of War (Princeton University Press 2009). In September 2010, Basic Books published his book titled Climatopolis . This book examines the future of cities as climate change unfolds. Unlike any previous book about climate change adaptation, it uses the logic of microeconomics to discuss how diverse self interested urban households and firms will respond to changing climate conditions.