Studied at Vassar College, Yale and Stanford Universities. Researcher for 25 years in biogeochemistry/forest ecology. Formerly: 15 years as faculty member, Brown University; founding Director, Global Environment Program, Watson Institute for International Studies; founder, East Asia Long-term Ecological Research Network; Vice-Chair, International Long-Term Ecological Research Network. Currently: ecosystem ecologist and Chief Scientist, Environmental Defense Fund; co-Chair, Royal Society's Solar Radiation Management Governance Initiative; serves on numerous other science advisory panels, including: the National Research Council and the US Department of Agriculture. Author: published +80 scientific papers on: biogeochemistry; climate change impacts on forests; carbon accounting approaches and methodologies. Lead author for the Intergovernmental Panel on Climate Change (IPCC). Awards: US EPA Environmental Merit Award twice, for climate change related work; acknowledged as a contributing r