Admission: This event is free and open to the public. RSVPs are required for in-person attendance. Non-Harvard University ID holders must check in at the Wexner security desk upon arrival.

The event will also be streamed via Zoom. Virtual attendees should register using the button above; upon registering, attendees will receive a confirmation email with a Zoom link. 

Accessibility: To request disability accommodations or for questions about access, please contact Elizabeth Hanlon ( in advance of the session.

Sponsors: This event is co-sponsored by the Environment and Natural Resources Program at the Belfer Center for Science and International Affairs, the Mossavar-Rahmani Center for Business and Government, the Harvard Alumni for Climate and the Environment, and the Salata Institute for Climate and Sustainability.


Nathaniel Keohane is President of the Center for Climate and Energy Solutions (C2ES), which is widely recognized in the United States and internationally as a leading, independent voice for practical policy and action to address the world’s energy and climate challenges.

Dr. Keohane is an economist with more than 20 years of energy and environmental policy experience in academia, government, and the non-profit sector. Before joining C2ES as President in 2021, Keohane was Senior Vice President for Climate with the Environmental Defense Fund (EDF), where he led all of EDF’s climate work in the United States and globally. In 2011-2012, Keohane served in the White House as Special Assistant to the President for Energy and Environment in the National Economic Council and Domestic Policy Council, helping to shape administration policy on energy and environmental issues. He previously directed economic policy and analysis at EDF, working to enact comprehensive cap-and-trade legislation in Congress.

From 2001-2008, Dr. Keohane was an Assistant and then Associate Professor of Economics at the Yale School of Management. He received a Ph.D. from Harvard University and a B.A. from Yale College.