Paul Wapner is Professor of Global Environmental Politics in the School of International Service at American University, Washington DC, USA.  His research interests include: Environmental Ethics, Transnational Activism, and the Politics of Planetary Sustainability.  Wapner’s publications include: Living through the End of Nature: The Future of American Environmentalism (MIT 2010), Principled World Politics (Roman and Littlefield 2000), and Environmental Activism and World Civic Politics (SUNY 1996).  His latest work focuses on how the most vulnerable are experiencing climate change.