Charles Crissman joined WorldFish in August 2010. He was previously at the International Potato Center posted in the Lima HQ and in offices in Quito and Nairobi. His most recent job at CIP was as Deputy Director General – Research from 2005 until 2010. Previously he had been CIP’s regional leader for SSA and program leader for uptake and utilization. Originally from North Carolina in the USA, Charles is an agricultural economist with his doctorate from the University of California-Davis and M.Sc. from the University of Missouri-Columbia. Specialized in production economics, his research focused on seed systems management, impact assessment, and the agricultural, environmental and human health impacts of pesticide use by small farm households. His 25 years in international agricultural research in Asia, Africa and Latin America has given him a long view of changing context of the CG system and the use and utility of well planned impact assessment as part of the research process