68 Items

A recently planted African Mahogany tree grows at the Lufasi Park Lake Nora

AP/Sunday Alamba

Paper - Harvard Kennedy School

The Evolving Role of Greenhouse Gas Emission Offsets in Combating Climate Change

| August 2022

As governments, firms, and universities advance ambitious greenhouse gas emission goals, the demand for emission offsets — projects that reduce or remove emissions relative to a counterfactual scenario — will increase. Reservations about an offset’s additionality, permanence, double-counting, and leakage pose environmental, economic, and political challenges. The authors review the role of offsets in regulatory compliance, as an incentive for early action, and in implementing voluntary emission goals

Clouds in a blue sky

Flickr CC/arbyreed

Journal Article - Science

Social Science Research to Inform Solar Geoengineering

  • Tyler Felgenhauer
  • William A. Pizer
  • Massimo Tavoni
  • Mariia Belaia
  • Mark E. Borsuk
  • Arunabha Ghosh
  • Garth Heutel
  • Daniel Heyen
  • Christine Merk
  • Juan B. Moreno-Cruz
  • Jesse L. Reynolds
  • Katharine Ricke
  • Wilfried Rickels
  • Soheil Shayegh
  • Wake Smith
  • Simone Tilmes
  • Jonathan B. Wiener
| Nov. 12, 2021

Professors David Keith and Joseph Aldy and their co-authors say deeper social science research could contribute to policy decisions on this tool to address climate change.

A container ship of the shipping line Hamburg Süd passing under the Golden Gate Bridge

Wikimedia CC/Frank Schulenburg

Analysis & Opinions - Resources Magazine

A Solution to the Competitiveness Risks of Climate Policy: Countervailing Duty Law

| Oct. 05, 2021

Joseph Aldy describes how the United States can work toward its ambitious climate goals and ensure a level playing field for U.S. businesses by using countervailing duties under international trade law, without the need for new legislation.

Audio - Resources Radio

When Will the Sun Set on Fossil Fuel Subsidies?

| Sep. 07, 2021

Joseph Aldy describes the challenge of reforming fossil fuel subsidies, given uncertainty about how much subsidies actually cost governments and given provisions in the US tax code that privilege fossil fuels over renewable energy sources. Aldy also elaborates on some policies that the Biden administration—which has committed to removing fossil fuel subsidies—could target as policymakers develop infrastructure legislation.

Discussion Paper - Harvard Project on Climate Agreements

Environmental Benefit-Cost Analysis: A Comparative Analysis Between the United States and the United Kingdom

| January 2021

The United States and United Kingdom have longstanding traditions in use of environmental benefit-cost analysis (E-BCA). While there are similarities between how E-BCA is utilized, there are significant differences too, many of which mirror ongoing debates and recent developments in the literature on environmental and natural resource economics. We review the use of E-BCA in both countries across three themes: (a) the role of long-term discounting; (b) the estimation and use of carbon valuation; and, (c) the estimation and use of the value of a statistical life. 

Discussion Paper - Harvard Project on Climate Agreements

Co-Benefits and Regulatory Impact Analysis: Theory and Evidence from Federal Air Quality Regulations

  • Matthew Kotchen
  • Mary Evans
  • Meredith Fowlie
  • Arik Levinson
  • Karen Palmer
| January 2021

This paper considers the treatment of co-benefits in benefit-cost analysis of federal air quality regulations. Using a comprehensive data set on all major Clean Air Act rules issued by the Environmental Protection Agency over the period 1997–2019, the authors show that (1) co-benefits make up a significant share of the monetized benefits; (2) among the categories of co-benefits, those associated with reductions in fine particulate matter are the most significant; and (3) co-benefits have been pivotal to the quantified net benefit calculation in nearly half of cases.