John McNeill is University Professor and Professor of Environmental History at Georgetown University.  He is a former president of both the American Historical Association and the American Society for Environmental History, elected member of the American Academy of Arts and Sciences, and winner of the Toynbee Prize and Heineken Prize. His book, Mosquito Empires (2010), won the Beveridge Prize of the American Historical Association for the Best Book on the History of the Western Hemisphere.