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

Astronomy at McDonald Observatory, University of Texas at Austin

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

Astronomer at McDonald Observatory, University of Texas at Austin

Astronomer at McDonald Observatory, University of Texas at Austin

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

Astronomer at McDonald Observatory, University of Texas at Austin

Associate Professor of History at University of New Haven

Chair in Political Science at the City College of New York in New York, NY

Emeritus Professor of Politics at Oxford University in Oxford, ENG

Associate Professor, National Security Department at University of New Haven

Associate Professor of Government at Claremont McKenna College

Senior Fellow, Center on Budget and Policy Priorities in Washington, DC

Dean and Economic Health Researcher at University of Chicago Institute of Politics

Professor in Law and Medicine at UCLA

Senior Researcher, Health Care Coverage and Access at The Commonwealth Fund

Vice President, Health Care Coverage and Access at The Commonwealth Fund

Director - Medicare for All Campaign at Public Citizen

Professor and Chair of the Department of Health Policy & Management at Emory University, School of Medicine