'The Kyoto Protocol was at best an imperfect and incomplete first step toward an effective response to the enormously difficult problem of climate change, which is characterized by huge stakes, great uncertainties, global scope, and a time-scale measured in decades or centuries. In this important volume, Joseph Aldy, Robert Stavins, and a host of distinguished contributors provide a thoughtful exploration of a range of alternative post-Kyoto top-down and bottom-up regimes and their implications. This book should be read by everyone who takes climate change seriously as a policy problem.' Richard Schmalensee, John C Head III Dean of the MIT Sloan School of Management and Professor of Economics and Management, Massachusetts Institute of Technology