Ronald B. Mitchell is Professor in the Department of Political Science at the University of Oregon.

William C. Clark is Harvey Brooks Professor of International Science, Public Policy, and Human Development at the Kennedy School of Government at Harvard University.

David W. Cash is Director of Air, Energy, and Waste Policy in the Massachusetts Executive Office of Environmental Affairs.

Nancy M. Dickson is Senior Research Associate and Codirector of the Science, Environment and Development Group at the Kennedy School of Government.