What is a sustainable food system? Former undersecretary of the USDA, Kathleen Merrigan, Executive Director of Sustainability at George Washington University talks about what's possible, what's happening and what to hope for.

At George Washington University, Dr. Merrigan leads the GW Sustainability Collaborative, GW Food Institute, and serves as Professor of Public Policy. She serves as a Co-Chair for AGree, Board Director for the Stone Barns Center for Food and Agriculture and FoodCorps, a member of the Harvard Pilgrim Healthy Food Fund Advisory Committee, Senior Advisor at the Kendall Foundation, and steering committee member of the Council of Environmental Deans and Directors of the National Council for Science and the Environment and the United Nations Environment Programme led initiative TEEB for Agriculture & Food.

Recognizing the history and scope of her work, Time Magazine named Kathleen among the “100 most influential people in the world” in 2010.