John McNeill was born and raised in Chicago and remains passionately devoted to the professional sports teams of the Windy City. He earned, or at any rate was awarded, a B.A. from Swarthmore College and a Ph.D. from Duke University. Since 1985 he has cheerfully served two masters, as a faculty member of the School of Foreign Service and History Department at Georgetown. From 2003 until 2006 he held the Cinco Hermanos Chair in Environmental and International Affairs, until his appointment as University Professor. He teaches world history, environmental history, and international history at Georgetown; and writes books, and directs Ph.D. students, mainly in environmental history. He lives an agreeably harried existence with his triathlete wife and their four exuberant children. If he had time, he would enjoy hiking, tennis, basketball, and travel.