Paul J. Ferraro is a Bloomberg Distinguished Professor in the Carey Business School and the Department of Environmental Health and Engineering, a joint department of the Bloomberg School of Public Health and the Whiting School of Engineering, at Johns Hopkins University. Dr. Ferraro’s research focuses on the design and evaluation of cost-effective environmental policies and institutions, and the use of experiments to study human behavior and decision-making. He has been the Humanitas Visiting Professor of Sustainability Studies at the University of Cambridge, a member of Global Environment Facility’s five-member Science Advisor Panel, a Bellagio Fellow, and a Senior Science Fellow and the Kathryn Fuller Science for Nature Fund Visiting Scientist at the World Wildlife Fund. He received his PhD in economics from Cornell University, and also holds a BA in biology and history, and an MS in economics, from Duke University. He is a collaborating author on the 2005 Millennium Ecosystem Assessment, and his research appears in journals such as the American Journal of Political Science, Conservation Letters, PLoS Biology, Proceedings of the National Academy of Sciences, Review of Economics & Statistics, Science, and Trends in Ecology & Evolution (see http://www.pauljferraro.com for more details).