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

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

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

Astronomer at McDonald Observatory, University of Texas at Austin

Assistant Professor of Political Science at Amherst College

Co-founder at The Violence Project

Assistant Professor of Politics and Public Affairs at Princeton University

Professor at Florida State University in Tallahassee, FL

National and Homeland Security Professor & Director, Safe Communities Institute at USC Dornsife College

Director - Georgetown COMPASS, Tenure Line - Professor (Infectious Diseases) at Georgetown University, School of Medicine

Dean of Research and Research Professor at Keck Graduate Institute

Chair of Obstetrics and Gynecology at Cornell University, Weill School of Medicine

Professor, Medicine at Case Western Reserve University, School of Medicine

Associate Professor of Medicine at Cornell University, Weill School of Medicine

Assistant Professor, specialized in vaccines at Yale University School of Medicine