Christopher J. Preston is Professor of Philosophy and a Fellow at the Mansfield Center's Program on Ethics and Public Affairs at the University of Montana. Contributors: Christian Baatz, research assistant, Department of Philosophy, Christian-AlbrechtsUniversitat, Kiel, Germany; Patrik Baard, doctoral candidate, Royal Institute of Technology, Stockholm, Sweden; Matthew Cotton, Lecturer, Department of Town and Regional Planning, University of Sheffield, UK; Johannes Emmerling, Senior Researcher in Climate Change and Sustainable Development, Fondazione Eni Enrico Mattei, Milan, Italy; Allen Habib, Assistant Professor of Philosophy, University of Calgary, Canada; Joshua Horton, Post-doctoral Research Fellow, Belfer Center for Science and International Affairs, Harvard University, USA; Marion Hourdequin, Associate Professor of Philosophy, Colorado College, USA; Frank Jankunis, doctoral student in philosophy, University of Calgary, Canada; David Keith, Gordon McKay Professor of Applied Physics and Professor of Public Policy, Kennedy School, Harvard University; Teea Kortetmaki, doctoral student, University of Jyvaskyla, Finland; Penehuro Fatu Lefale, International Climate and Policy Analyst, Bodeker Scientific, Wellington, New Zealand; Jane Long, retired Principle Director at Large, Lawrence Livermore National Laboratory, Berkeley, USA, and contributing scientist for the Environmental Defence Fund; Duncan McClaren, director of McLaren Environmental Research Consultancy and Scientific Advisory Committee of the RCUK UK Energy Programme; Cush Luwesi Ngozo, Lecturer, Department of Geography, University of Kenyatta, Kenya; Konrad Ott, Professor for Philosophy and Ethics of the Environment, Kiel University, Germany; Andrew Parker, Research Fellow, Institute for Advanced Sustainability Studies, Potsdam, Germany; Tina Sikka, Postdoctoral Fellow and Lecturer, School of Communication, Simon Fraser University, Canada; Toby Svoboda, Assistant Professor of Philosophy, Fairfield University, USA; Massimo Tavoni, Fellow, Center for Advanced Studies in Behavioural Science, Stanford University, and Climate Change and Sustainable Development Deputy Coordinator, Fondazione Eni Enrico Mattei, Milan, Italy; Michael Thompson, Managing Director, Forum for Climate Engineering Assessment, School of International Service, American University, Washington DC, USA; Richard Tol, Professor of the Economics of Climate Change, Institute for Environmental Studies and Department of Spatial Economics in Vrije Universiteit, Netherlands and Professor of Economics, University of Sussex, UK; Per Wikman-Svahn, scientist, Swedish Defence Research Agency, Stockholm, Sweden