Senior Fellow and Director, Middle East Security Program at Center for a New American Security

Professor at Middlebury Institute of International Studies at Monterey in Monterey, CA

Distinguished fellow & former president at Carnegie Endowment for International Peace

Co-Director Nuclear Policy Program at Carnegie Endowment for International Peace

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

Chair, National Security at University of New Haven

Director of Energy Research & Analysis at Union of Concerned Scientists

CEO, WRI México at World Resources Institute

Senior Bilingual Energy Analyst at Union of Concerned Scientists

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

President at Friends of the Earth

Senior Fellow, Geopolitics of Energy Project at Harvard Belfer Center for Science and International Affairs

Global Director, Energy at World Resources Institute

Member of the Board at Harvard Belfer Center for Science and International Affairs

Member of the Board at Harvard Belfer Center for Science and International Affairs

Astronomer at McDonald Observatory, University of Texas at Austin

Professor, Arizona State University, School of Earth and Space Exploration in Phoenix, AZ

Astronomy at McDonald Observatory, University of Texas at Austin

Astronomer at McDonald Observatory, University of Texas at Austin

Astronomy at McDonald Observatory, University of Texas at Austin

Astronomer at McDonald Observatory, University of Texas at Austin

Astronomer, Research Associate at McDonald Observatory, University of Texas at Austin