Scott Gabriel Knowles is a professor of history at Drexel University, Philadelphia, whose work focuses on the history of disaster worldwide. He has served as a visiting faculty member of the Interuniversity Centre for the History of Science and Technology at NOVA University of Lisbon, and was previously a research fellow or visiting faculty member of the Research Center for Integrated Natural Disaster (CIGIDEN) at the Pontificia Universidad Catolica de Chile (2018), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, and the Rachel Carson Center, Munich (2016), and the University of Tokyo (2015). Knowles is the author of The Disaster Experts: Mastering Risk in Modern America (University of Pennsylvania Press, 2011), editor of Imagining Philadelphia: Edmund Bacon and the Future of the City (UPenn Press, 2009), and co-editor of Building Drexel: The University and Its City, 1891–2016 (with Richardson Dilworth, Temple University Press, 2016), and World’s Fairs in the Cold War: Science, Technology, and the Culture of Progress (with Art Molella, University of Pittsburgh Press, 2019). He is also series co-editor (with Kim Fortun) of Critical Studies in Risk and Disaster (UPenn Press). His work on the history of risk and disaster has appeared in the Natural Hazards Observer, Journal of Policy History, Technology and Culture, and Engineering Studies—he has also written for the New York Times, Huffington Post, Slate, Conservation Magazine, U.S. News & World Report, the Philadelphia Inquirer, and The Hill. Knowles is completing a new book titled The United States of Disaster (UPenn Press, forthcoming).