Peter C. Frumhoff is the Director of Science and Policy at the Union of Concerned Scientists (UCS) and Chief Scientist of the UCS Climate Campaign. A global change ecologist, Dr. Frumhoff has published and lectured widely on topics including climate change impacts, climate science and policy, energy and water, tropical forest conservation and management, and the conservation of biological diversity. He was a lead author of the Intergovernmental Panel on Climate Change (IPCC) 2007 Fourth Assessment Report and the 2000 IPCC Special Report on Land Use, Land-use Change and Forestry. Currently, he serves on the Board of Editors of Sustainability Transitions, the Advisory Committee on Climate Change and Natural Resource Science at the US Department of Interior, the Board of Directors of the American Wind Wildlife Institute, and the Steering Committee for the Center for Science and Democracy at UCS.

In 2014, Dr. Frumhoff was Cox Visiting Professor in the School of Earth Sciences at Stanford University. Previously, he has taught at the Fletcher School of Law and Diplomacy at Tufts University, Harvard University and the University of Maryland. He holds a Ph.D. in Ecology and an M.A. in Zoology from the University of California, Davis, and a B.A. in Psychology from the University of California, San Diego.