Board Member at Doctors Without Borders

Professor of Global Health at Boston University, School of Medicine

Associate Professor of Medicine, Division of Infectious Diseases at University of North Carolina CH, School of Medicine

Professor or Microbiology and Infectious Diseases at Boston University, School of Medicine

Professor & Chief, Division of Infectious Diseases at University of North Carolina CH, School of Medicine

Adjunct Lecturer in Public Policy at Harvard Kennedy School

Associate Director - Energy and Minerals at United States Geological Survey

Global Director, Energy at World Resources Institute

President at Friends of the Earth

Director of Energy Research & Analysis at Union of Concerned Scientists

Faculty Affiliate, Harvard Project on Climate Agreements at Harvard Belfer Center for Science and International Affairs

Professor of International Affairs, National Security Department at University of New Haven

Distinguished Service Professor of Public Policy and Head of Heinz College in Washington, DC at Carnegie Mellon University Heinz College

Vice President at Stimson Center