Urs Luterbacher is Professor Emeritus at the Centre for Environmental Studies and the Centre for Finance and Development at the Graduate Institute of International and Development Studies, Geneva. Detlef F. Sprinz is Professor at Potsdam Institute for Climate Impact Research and the University of Potsdam. Urs Luterbacher is Professor Emeritus at the Centre for Environmental Studies and the Centre for Finance and Development at the Graduate Institute of International and Development Studies, Geneva. Michael Aklin is Assistant Professor of Political Science at the University of Pittsburgh, and coauthor (with Johannes Urpelainen) of Renewables (MIT Press). Urs Luterbacher is Professor Emeritus at the Centre for Environmental Studies and the Centre for Finance and Development at the Graduate Institute of International and Development Studies, Geneva. Urs Luterbacher is Professor Emeritus at the Centre for Environmental Studies and the Centre for Finance and Development at the Graduate Institute of International and Development Studies, Geneva. Detlef F. Sprinz is Professor at Potsdam Institute for Climate Impact Research and the University of Potsdam. Matthew Paterson is Senior Lecturer in International Relations at Keele University. He is author of Global Warming and Global Politics (1996) and Understanding Global Environmental Politics (2003), as well as many articles and book chapters on these subjects. He is currently working on cars and global environmental politics. He is Associate Editor of Global Environmental Politics. Arild Underdal is Professor of Political Science at the University of Oslo. Detlef F. Sprinz is Professor at Potsdam Institute for Climate Impact Research and the University of Potsdam.