Aaron T. Wolf is a professor of geography in the College of Earth, Ocean, and Atmospheric Sciences at Oregon State University. His research and teaching focus is on the interaction between water science and water policy, particularly as related to conflict prevention and resolution. He has acted as consultant to the US Department of State, the US Agency for International Development, the World Bank, and several governments on various aspects of transboundary water resources and dispute resolution. All told, he is (co-)author or (co-)editor of seven books, including Core and Periphery: A Comprehensive Approach to Middle Eastern Water, (Oxford University Press, 1997), Transboundary Freshwater Dispute Resolution, (United Nations University Press, 2000), Managing and Transforming Water Conflicts (Cambridge University Press, 2009), and close to fifty journal articles, book chapters, and professional reports on various aspects of transboundary waters, from the local scale to the international. A trained mediator/facilitator, he directs the Program in Water Conflict Management and Transformation, through which he has offered workshops, facilitation, and mediation in basins throughout the world.