Environment & Climate Change

Richard Revesz, the Lawrence King Professor of Law at New York University and co-founder of the Institute for Policy Integrity, shared his thoughts on how the transition to a new presidential administration later this month will impact U.S. environmental and climate change policy in the latest episode of “Environmental Insights: Discussions on Policy and Practice from the Harvard Environmental Economics Program,” a podcast produced by the Harvard Environmental Economics Program.

An exclusive interview with Lord Nicholas Stern, one of the world’s foremost experts on climate change.

“Environmental Insights: Conversations on policy and practice from the Harvard Environmental Economics Program” is hosted by Robert Stavins, A.J. Meyer Professor of Energy and Economic Development at Harvard Kennedy School, and director of the Harvard Environmental Economics Program.

Harvard Project on Climate Agreements collaborator and Professor of Economics at Harvard University Martin Weitzman discussed the potential of carbon taxes and cap-and-trade programs to deal with climate change. He also expressed his concerns regarding geoengineering.

Climate policy is complicated. For a treaty to be beneficial, one must think through carefully how it will work, once it is implemented. Crucial questions include the following: How should an international treaty be designed? Should one negotiate commitments for a five-year period, or for much longer? Assuming that the treaty specifies aggregate or country-specific emission caps, what should these caps be and how should they change over time? How should the agreement be updated once policymakers, scholars, and the public learn more about the severity of the climate-change problem, or about the effects of the policy? Can the treaty be designed to encourage investments in "green" abatement technology or renewable energy sources? Finally, how can one motivate countries to participate and comply with such an agreement?

The introduction of the U.S. SO2 allowance-trading program to address the threat of acid rain as part of the Clean Air Act Amendments of 1990 is a landmark event in the history of environmental regulation. The program was a great success by almost all measures. Ironically, cap and trade seems especially well suited to addressing the problem of climate change, in that emitted greenhouse gases are evenly distributed throughout the world's atmosphere. Recent hostility toward cap and trade in debates about U.S. climate legislation may reflect the broader political environment of the climate debate more than the substantive merits of market-based regulation.

The United Nations Framework Convention on Climate Change (UNFCCC) has significant advantages but also real challenges as a venue for international negotiations on climate change policy. In the wake of the Fifteenth Conference of the Parties (COP-15) in Copenhagen, December 2009, it is important to reflect on institutional options going forward for negotiating and implementing climate change policy.