Nathaniel Keohane is President of the Center for Climate and Energy Solutions (C2ES), a widely respected, nonpartisan non-profit organization that works with policy makers and leading businesses to accelerate the transition to a thriving, just, and resilient net-zero-emissions economy. Dr. Keohane is a globally recognized expert on climate policy, carbon markets, and the economics of climate change. He has more than 20 years of energy and environmental policy experience in academia, government, and the non-profit sector, including at Environmental Defense Fund, where he held a range of roles including Chief Economist and most recently Senior Vice President for Climate; in the White House, as Special Assistant to President Obama for Energy and Environment in the National Economic Council (2011-2012); and, earlier in his career, as Assistant and then Associate Professor of Economics at the Yale School of Management. He holds a Ph.D. from Harvard and a B.A. from Yale.