Sébastien Philippe is a Research Scholar with continuous appointment in the Program on Science and Global Security, part of Princeton University's School of Public and International Affairs. His research interests at the nexus of science and policy include nuclear non-proliferation, arms control, disarmament, and justice issues. He is the co-author of Toxique (French University Press, 2021), an investigation into the radiological and environmental impact of French nuclear tests in the Pacific, which was a Finalist for the 2021 Albert Londres Prize (the French equivalent of the Pulitzer) and won a 2022 Sigma Award for best data journalism in the world, among other accolades. Philippe received his PhD (2018) in Mechanical and Aerospace Engineering from Princeton, was a Stanton Nuclear Security Postdoctoral fellow at the Harvard Kennedy School, and has served as a nuclear weapon system safety engineer in France's Ministry of Armed Forces.