Paul Steinberg is Professor of Political Science and Environmental Policy at Harvey Mudd College, where he directs The Social Rules Project. He is the author of three books: Who Rules the Earth? (Oxford University Press), Comparative Environmental Politics (MIT Press) and Environmental Leadership in Developing Countries (MIT Press), which won the International Studies Association’s Harold and Margaret Sprout Award for the best book in international environmental affairs. He has held academic posts at the Nicholas School of the Environment at Duke University and at the School of Advanced International Studies at Johns Hopkins. He has also worked in applied positions with the Natural Resources Defense Council, Conservation International, The World Bank, RARE, Pesticide Action Network, and the US Peace Corps. He serves on the editorial board for the journal Global Environmental Politics.