Timothy Thomas is a Research Fellow in the Environment and Production Technology Division of the International Food Policy Research Institute (IFPRI). He currently leads the IMPACT modeling team. IMPACT is a global economic model which evaluates the impact of climate change on agriculture, food availability, and undernutrition, taking into account GDP, population, and change in agricultural technologies. He was one of the lead authors of three books on climate change and agriculture in Africa and has done similar studies for the Pacific Islands, Latin America, Central Asia, and the Philippines, and smaller studies for Bangladesh and Cambodia. Prior to coming to IFPRI, Tim worked a number of years at the World Bank, studying tropical deforestation and rural development. Tim has a Ph.D. in agricultural economics from the University of Maryland College Park.