Joan Martinez-Alier is Professor Emeritus in Economics and Economic History and senior researcher at the ICTA, Universitat Autonoma de Barcelona. He is also currently working on a five-year project funded by the European Research Council: A Global Environmental Justice Movement: the EJAtlas. He has also held positions with many universities, including FLACSO (Ecuador), Stanford, and Yale, and is a founding member and past president of the International Society for Ecological Economics. Prior to that he was a researcher at St. Antony's College, Oxford. He obtained his PhD in Economics from the Universitat Autonoma de Barcelona in 1976. His main research interest is in Ecological Economics, social metabolism, and the environmentalism of the poor. Amongst his most significant publications are The Environmentalism of the Poor: A Study of Ecological Conflicts and Valuation (2002) and Ecological Economics: Energy, Environment and Society (1990).