Allison Macfarlane is a professor of environmental science and policy at George Mason University in Fairfax, VA. Her research focuses on environmental- policy and international-security issues associated with nuclear energy. She is the editor of Uncertainty Underground: Yucca Mountain and the Nation’s High-Level Nuclear Waste (The MIT Press, 2006), which explores the unresolved technical issues for nuclear waste disposal at Yucca Mountain, Nevada.