Edward Glaeser is the Fred and Eleanor Glimp Professor of Economics in the Faculty of Arts and Sciences at Harvard University, where he has taught since 1992. He regularly teaches microeconomics theory, and occasionally urban and public economics. He has served as Director of the Taubman Center for State and Local Government, and Director of the Rappaport Institute for Greater Boston. He has published dozens of papers on cities economic growth, law, and economics. In...