Economist and Harvard Kennedy School Professor Joe Aldy says  possibly the most complex—and one of the most existentially important—problems facing humanity is how to pull out the roots of fossil fuel infrastructure that are so deeply embedded in the global economy. The work is complex and the scale is immense; In fact it’s been said that transitioning the global economy from fossil fuels to sustainable sources will require the largest reallocation of capital in human history. Meanwhile Russia's invasion of Ukraine and its willingness to weaponize oil and natural gas distribution was a sign to many that the green energy transition will be bumpy and buffeted by geopolitical crises and the domestic politics of countries around the world. Joe Aldy is here to help us swap our rose-colored glasses for a clear-eyed vision of what the future holds for the economics of climate.

Joe Aldy is a Professor of the Practice of Public Policy at the John F. Kennedy School of Government at Harvard University, a University Fellow at Resources for the Future, a Faculty Research Fellow at the National Bureau of Economic Research, and a Senior Adviser at the Center for Strategic and International Studies. He is also the Faculty Chair for the Regulatory Policy Program at the Mossavar-Rahmani Center for Business and Government. His research focuses on climate change policy, energy policy, and regulatory policy. In 2009-2010, Aldy served as the Special Assistant to the President for Energy and Environment, reporting through both the National Economic Council and the Office of Energy and Climate Change at the White House. Aldy was a Fellow at Resources for the Future from 2005 to 2008 and served on the staff of the President's Council of Economic Advisers from 1997 to 2000. He also served as the Co-Director of the Harvard Project on International Climate Agreements, Co-Director of the International Energy Workshop, and Treasurer for the Association of Environmental and Resource Economists before joining the Obama Administration. He holds a PhD in economics from Harvard University, a Master of Environmental Management degree from the Nicholas School of the Environment, and a BA from Duke University.

Ralph Ranalli of the HKS Office of Public Affairs and Communications is the host, producer, and editor of HKS PolicyCast. A former journalist, public television producer, and entrepreneur, he holds an AB in Political Science from UCLA and an MS in Journalism from Columbia University.

The co-producer of PolicyCast is Susan Hughes. Design and graphics support is provided by Lydia Rosenberg, Delane Meadows and the OCPA Design Team. Social media promotion and support is provided by Natalie Montaner and the OCPA Digital Team.