Doug McAdam is Professor of Sociology at Stanford University and the former Director of the Center for Advanced Study in the Behavioral Sciences (CASBS). He is the author or co-author of 13 books and some 75 articles in the area of political sociology, with a special emphasis on the study of social movements and revolutions. Among his best known works are Political Process and the Development of Black Insurgency, 1930–1970, a new edition of which was published in 1999; Freedom Summer (1988), which was awarded the 1990 C. Wright Mills Award as well as being a finalist for the American Sociological Association's best book prize for 1991; and Dynamics of Contention (2001) with Sid Tarrow and Charles Tilly. He is also the author of the forthcoming book, A Theory of Fields (with Neil Fligstein). He is a two-time former Fellow of CASBS, a recipient of a Guggenheim Fellowship and a member of the American Academy of Arts and Sciences (2003). Hilary Schaffer Boudet holds a PhD from the Emmett Interdisciplinary Program in Environment and Resources at Stanford University. Her research interests include the environmental and social impacts associated with energy development and public participation in environmental decision-making. Her dissertation focused on the factors and processes that shape community mobilization around proposals for liquefied natural gas (LNG) facilities. She is currently a postdoctoral scholar at the Stanford University School of Medicine/Stanford Prevention Research Center and a lecturer in the Stanford University Urban Studies program. She has published in the Journal of Planning Education and Research, Environmental Politics, the Journal of Construction Engineering and Management and Sociological Forum.