George Baker is Assistant Professor of Art History at the University of California, Los Angeles, and an editor at October magazine and October Books. He is the editor of James Coleman (MIT Press) and a frequent contributor to Artforum.Michael D. Mastrandrea is an Assistant Consulting Professor at theStanford University Woods Institute for the Environment. His work hasbeen published in Science Magazine and Proceedings of the NationalAcademy of Sciences, and he is co-author of chapters on keyvulnerabilities and climate risks and on long-term mitigation strategiesfor the 2007 IPCC Fourth Assessment Report. He also serves on theEditorial Board for the journal Climatic Change and is co-editor of… the book Climate Change Science and Policy.