ernmental Panel on Climate Change. Involved with the IPCC since the mid 1990s, he served as a lead author for four different chapters in the Third Assessment Report that was published in 2001 and as convening lead author for the last chapter of the contribution of Working Group II to the Fourth Assessment Report. In that Assessment, he also worked with the core writing team to prepare the overall Synthesis Report. Dr. Yohe serves as a member of the New York City Panel on Climate Change and the standing Committee on the Human Dimensions of Global Change of the National Academy of Sciences. He has testified before the Senate Foreign Relations Committee on the “Hidden (climate change) Cost of Oil” on March 30, 2006, the Senate Energy Committee on the Stern Review on February 14, 2007, and the Senate Banking Committee on “Material Risk from Climate Change and Climate Policy” on October 31, 2007. In addition to accepting an invitation to join the Adaptation Subcommittee of the Governor’s Steering Committee on Climate Change (CT), he is served on the Adaptation Panel of the National Academy of Sciences’ initiative on America’s Climate Choices.