Daniel A. Mazmanian is Professor of Public Policy at the Sol Price School of Public Policy at the University of Southern California. Michael E. Kraft is Professor of Political Science and Public Affairs Emeritus and Herbert Fisk Johnson Professor of Environmental Studies Emeritus at the University of Wisconsin-Green Bay. Daniel J. Fiorino is Director of the Center for Environmental Policy in the School of Public Affairs at American University. Daniel A. Mazmanian is Professor of Public Policy at the Sol Price School of Public Policy at the University of Southern California. Michael E. Kraft is Professor of Political Science and Public Affairs Emeritus and Herbert Fisk Johnson Professor of Environmental Studies Emeritus at the University of Wisconsin-Green Bay. Michele M. Betsill is Associate Professor in the Department of Political Science at Colorado State University. Barry G. Rabe is J. Ira and Nicki Harris Family Professor of Public Policy and Arthur F. Thurnau Professor of Environmental Policy at the University of Michigan, where his primary appointment is in the Gerald R. Ford School of Public Policy. He also directs the Center for Local, State, and Urban Policy at the Ford School and is a Non-Resident Senior Fellow at the Brookings Institution. Kent E. Portney is Professor and Senior Fellow in the Institute for Science, Technology, and Public Policy at Texas A&M University. He is the author of Taking Sustainable Cities Seriously (MIT Press). Mark Lubell is Assistant Professor in the Department of Environmental Science and Policy at the University of California, Davis. Paul A. Sabatier is Professor of Environmental Science and Policy at the University of California, Davis. Barry G. Rabe is J. Ira and Nicki Harris Family Professor of Public Policy and Arthur F. Thurnau Professor of Environmental Policy at the University of Michigan, where his primary appointment is in the Gerald R. Ford School of Public Policy. He also directs the Center for Local, State, and Urban Policy at the Ford School and is a Non-Resident Senior Fellow at the Brookings Institution. Michael E. Kraft is Professor of Political Science and Public Affairs Emeritus and Herbert Fisk Johnson Professor of Environmental Studies Emeritus at the University of Wisconsin-Green Bay. Daniel A. Mazmanian is Professor of Public Policy at the Sol Price School of Public Policy at the University of Southern California.