John M. Antle is a professor in the Department of Applied Economics at Oregon State University, Corvallis, Oregon, and a University Fellow at Resources for the Future, Washington, D.C.; and previously a professor at the University of California, Davis, and Montana State University. He received the Ph.D. in Economics from the University of Chicago in 1980. He has served as a senior staff economist for the President's Council of Economic Advisers in Washington, D.C. (1989-90); as a member of the National Research Council's Board on Agriculture (1991 97); and was a lead and contributing author to the IPCC third and fourth assessment reports. He is a Fellow and past President of the American Agricultural Economics Association. He is currently a co-PI of the Agricultural Model Inter-comparison and Improvement Project (AgMIP), and leading the Regional Economics component of AgMIP. He is the lead developer of the Tradeoff Analysis Model for Multi-dimensional Impact Assessment, a model being used globally by CGIAR centers and various other institutions for agricultural sustainability and climate impact assessment. His current research focuses on the quantitative assessment of the sustainability of agricultural systems in industrialized and developing countries, including climate change impacts, adaptation and mitigation; and ex ante assessment of environmental and social impacts of agricultural technologies and policies.