Ewing is the Frank Stanton Professor in Nuclear Security in the Center for International Security and Cooperation in the Freeman Spogli Institute for International Studies and a Professor in the Department of Geological Sciences in the School of Earth, Energy and Environmental Sciences at Stanford University. Ewing’s research focuses on the back end of the nuclear fuel cycle, mainly nuclear materials and the geochemistry of radionuclides. He is the past president of the International Union of Materials Research Societies. Ewing has written extensively on issues related to nuclear waste management and is co-editor of Radioactive Waste Forms for the Future and Uncertainty Underground: Yucca Mountain and the Nation’s High-Level Nuclear Waste. He received the Lomonosov Medal of the Russian Academy of Sciences in 2006.