KEVIN D. CROWLEY is senior board director of the Nuclear and Radiation Studies Board (NRSB) at the National Research Council–National Academy of Sciences in Washington, DC. He is responsible for managing the NRSB’s work on nuclear safety and security, radioactive-waste management and environmental cleanup, and radiation health effects. He is also the principal investigator for a long-standing cooperative agreement between the National Academy of Sciences and the U.S. Department of Energy to provide scientific support for the Radiation Effects Research Foundation in Hiroshima, Japan. Dr. Crowley’s professional interests and activities focus on safety, security, and technical efficacy of nuclear and radiation-based technologies. He has directed over 20 National Research Council studies on these and other topics, including Safety and Security of Commercial Spent Nuclear Fuel Storage (2004, 2006); Going the Distance? The Safe Transport of Spent Nuclear Fuel and High-Level Radioactive Waste in the United States (2006); Medical Isotope Production without Highly Enriched Uranium (2009); America’s Energy Future: Technology and Transformation (2009); and Analysis of Cancer Risks in Populations near Nuclear Facilities (2012). He is currently directing a congressionally mandated study on Lessons Learned from the Fukushima Nuclear Accident for Improving Safety and Security of U.S. Nuclear Plants. Before joining the National Research Council staff in 1993, Dr. Crowley held teaching/research positions at Miami University of Ohio, the University of Oklahoma, and the U.S. Geological Survey. He holds M.A. and Ph.D. degrees, both in geology, from Princeton University.