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Hui-Shung (Christie) Chang is a Senior Lecturer at the University of New England (UNE), Australia. She received her PhD in agricultural economics from University of California-Davis in 1988. Before joining UNE, Dr Chang was a Visiting Assistant Professor at the Auburn University, Alabama from 1988 to 1992 and a Principal Research Officer at the Australian Bureau of Agricultural and Resource Economics, Canberra from 1992 to 1995. Her research interests are commodity marketing and trade, applied demand analysis and efficiency and productivity analysis.

Jean-Paul Chavas is a Professor of agricultural and applied economics at the University of Wisconsin, Madison, USA. In 1994 he became a Fellow of the American Agricultural Economic Association. He has been named in Who Is Who in Economics in 1996 and 1999. In 1997 he received an award for Distinguished Graduate Teaching from the American Agricultural Economic Association. He has been at the University of Wisconsin since 1982. From 1978 to 1982 he was a faculty member at Texas A&M University, USA. His PhD and MS are in agricultural economics from the University of Missouri, 1978 and 1976, respectively. His B.S. in agriculture is from ISARA, Lyon, France in 1972.

Donna Lee is an Assistant Professor of Food and Resource Economics in the Institute of Food and Agricultural Sciences at the University of Florida in Gainesville Florida. She teaches natural resource and environmental economics and conducts research in the areas of water quality, marine fisheries management, and environmental policy. She received a B.S. in bioresource sciences from the University of California at Berkeley and a Ph.D. in agricultural economics from the University of California at Davis. She has worked as an agricultural economist for the Economic Research Service of the US Department of Agriculture, an Assistant Professor at the University of Hawaii and as a consultant for the World Bank.

David E. Schimmelpfennig is a Program Leader in agricultural research and productivity at USDA's Economic Research Service. He also led an ERS team investigating climate change impacts on agriculture. He has published journal articles on public sector plant breeding in the UK, returns to South African R&D and supply response in South Africa, and R&D spending and productivity in the United States and the European Community; as well as numerous popular and professional articles on climate change. He has chaired sessions on agricultural research spillovers at meetings of the American Economic Association and the Western Economic Association and is a member of the NC-208. He teaches a class at the USDA Graduate School, is a team leader on the Strategic Planning Task Force for USDA's Research Facilities and serves on a National Science Foundation Tiger Team. His Ph.D. and M.A. in economics are from Michigan State University, and he has an honors economics B.S. from Purdue University. He matriculated from public high school in Johannesburg, South Africa in 1977.

Meredith Soule is an economist with the Resource Economics Division of USDA's Economic Research Service (ERS) in Washington, D.C., where she has worked since 1997. Prior to joining ERS, she was a Rockefeller Foundation Social Science Research Fellow with the International Centre for Research in Agroforestry in Kenya. She received her Ph.D. in agricultural and resource economics from the University of California at Berkeley in 1994. She works on the economics of soil conservation, risk management and agricultural productivity.

Jackeline Velazco is Assistant Professor of economics at the Pontificia Universidad Catolica del Peru (PUCP) in Lima, Peru. She is also a faculty affiliate of the Gender Studies Program. She is currently on leave at the University of Manchester in the United Kingdom pursuing a PhD in economics. She works on issues of poverty and gender in Latin America. She is a consultant to the World Bank.

Keith Wiebe is an economist with the Resource Economics Division of USDA's Economic Research Service (ERS) in Washington, DC, where he has worked since 1992. Prior to joining ERS, he received his Ph.D. in agricultural economics and completed post-doctoral research at the Land Tenure Center of the University of Wisconsin-Madison. His program of work at ERS includes research on property rights, resource use, conservation, land degradation, agricultural productivity and food security.

Lydia Zepeda is an Associate Professor of consumer science at the University of Wisconsin-Madison, USA. She is a faculty affiliate of the Development Studies Program, the Land Tenure Center, the Institute for Environmental Studies, the Latin American and Iberian Studies Program and Women's Studies, all at the University of Wisconsin-Madison. Her research interests include technology adoption in agriculture, consumer acceptance of agricultural biotechnology, the role of women in farm decision making especially technology decisions, the role of women and children in agricultural production and environmental and economic trade-offs of farm production decisions. She teaches family and household economics, econometrics, and production economics at the graduate and undergraduate level. From 1996 to 1998 she worked for the United Nations Food and Agriculture Organization as an economist. Her PhD and MS degrees in agricultural economics are from the University of California at Davis.

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