"Let the WTO referee Carbon Border Taxes," Project Syndicate. Nov. 28, 2022.
"Evaluating Which Countries Do their Fair Share in Pledged Carbon Cuts," Webinar on Managing Elevated Risks of Climate Transition, T20 for the Indonesia Presidency of G20 in 2022, June 2, 2022
“National Security and Environmental Concerns Over Dependence on Russia Could be a Win-Win,” audio, Background Briefing with Ian Masters, KPFK-FM, Los Angeles, May 2, 2022.
"The West's Energy Policies can be Geopolitical and Green," Project Syndicate, April 26. "The West Can Cut Its Energy Dependency on Russia and Be Greener" The Guardian, May 2, 2022.
"High Oil Prices Can Help the Environment," Project Syndicate, Oct. 25. “Biden’s conundrum: High oil prices are unpopular, but could aid climate agenda,” Houston Chronicle, Nov. 19, 2021.
“The Covid-Climate Nexus,” Project Syndicate, Sept. 30, 2020. “Covid-19 and the Climate Crisis are Part of the Same Battle,” The Guardian, Oct.2, 2020.
“The best way to help the climate is to increase the price of CO2 emissions,” The Guardian, January 20, 2020.
HUCE, March 4th, 2016 (pdf) & 2013, Graduate Consortium on Energy & Environment, Harvard University.
"A Fair, Efficient and Feasible Climate Agreement," Project Syndicate, Dec. 17, 2015.
"Now is the Right Time to Reform Oil Pricing," The Guardian, August 10, 2015.
"Trade, Growth and the Environment," guest lecture, Rob Stavins' class, April 2016 (ppt; pdf). April 2015 (pdf of slides).
"A Pre-Lima Scorecard for Evaluating Which Countries Are Doing their Fair Share in Pledged Carbon Cuts," with Valentina Bosetti, Nov.2014. Viewpoints summary of full text of Policy Brief, Harvard Project on Climate Agreements. Medium-length version, "Fair Shares in Pledged Carbon Cuts" for VoxEU, Nov.24. Op-ed version in Project Syndicate, Nov.14, 2014.
"Market Failure and Political Failure," Project Syndicate, Feb.11, 2014. Full version, "The Rise and Fall of Cap-and-Trade," Feb. 18, 2014.
"Protectionist Shadows Over Solar Power," Project Syndicate, Aug. 1, 2013. Full version: Protectionist clouds darken sunny forecast for solar power, VoxEU, Aug. 7, 2013. Blog.
"Fear of Fracking" Project Syndicate, Apr.16, e.g., Korea Herald; & "The Problem with the Precautionary Principle," Apr.18, 2013. "Fear of Fracking," comments for panel on New Energy Sources, Conference on International Commodity Price Fluctuations, IMF, March 20.
"After Durban: What is the Politically Sustainable Path of Targets for Greenhouse Gas Emissions?" slides, March 27, 2012.
"How to Agree Emission Targets at Durban," with Valentina Bosetti, VoxEU, Nov. 28, 2011.
"Real Energy Security: Drill, Baby, Drill—But Not Now," Dec.2010, Weekly Policy Commentary, RFF. "Gulfs in Our Energy Security," blog, May 2010.
"Targets, Timetables and Trade: How to achieve a successful Copenhagen," East Asia Forum Quarterly, vol.I, no.3, Oct.-Dec.2009, pages 11-13.
"The Politically Possible: How to Achieve Success in Copenhagen" op-ed for the Bulletin of the Atomic Scientists, October 2009.
"A Post-Kyoto International Global Climate Agreement Proposal," Harvard Enviro. Econ. Program’s International Advisory Board meeting, Nov.13, 2009. Full slides. Synopsis.
"Last Exit Copenhagen? " Climate Governance Workshop, The Goethe-Institut Boston & Center for European Studies, Oct. 20, 2009.
"A Pragmatic Global Climate Policy Architecture," with V. Bosetti, Weekly Policy Commentary, Oct. 12, 2009; reprinted in A Reader’s Guide to Policy: 100 Commentaries on Environmental, Energy, Transportation, and Other Problems, Ian Parry & Felicia Day, eds. (Resources for the Future: Washington DC), 2009.
“How to Make Climate Change Research Relevant to Washington policymakers,” Energy Modeling Forum Workshop on Climate Change Impacts and Integrated Assessment, Snowmass, Colorado, 2008, pwrpt.slides.
“Next Steps After the Kyoto Protocol: Formulas for Quantitative Emission Targets,” Vox , June 2007.
Comment on Martin Wolf's column "In spite of sceptics, it is worth reducing climate change." For FT Forum, FT.com, Feb. 7, 2007.
Comment on “Curbs on emissions will take a change of political climate.” For FT Forum, FT.com, Nov. 8, 2006.
“How disruptive would $80-$100 oil be to the US and global economies?” April 2006, question for The International Economy.
"Designing a Regime of Emission Commitments for Developing Countries that is Cost-Effective and Equitable" (with Joseph Aldy), written for G20 Leaders and Climate Change, Council on Foreign Relations, Sept. 20-21, 2004.
"Kyoto and Geneva: Linkage of the Climate Change Regime and the Trade Regime" a speech for Broadening Climate Discussion: The Linkage of Climate Change to Other Policy Areas,FEEM/MIT conference, Venice, Italy, June 2004. KSG RWP04-042.
"Achieving Environmental Goals at Minimum Economic Cost," Edison Electric Institute Advisory Panel on Fuel Diversity, EEI Chief Executives Conference, Palm Springs, CA, Jan.2000.
"Curbing Carbon Emissions and the Kyoto Protocol: Perspective from the Administration," Washington Policy Seminar, Macroeconomic Advisers, Georgetown Conference Center, Sept. 10, 1998; and the IMF June 24, 1999.
“The Kyoto Agreement on Global Climate Change: The Administration Economic Analysis,” Luncheon Remarks to the NBER Conference on Tax Policy and the Economy, Hotel Washington, October 20, 1998. Appendix: Tables and Charts of Effects on Energy Prices.
"The Kyoto Agreement on Mitigating Global Climate Change: Gains to All from Participation by Developing Countries," Keynote speech, Executive Program on Climate Change and Development, Harvard Institute for International Development, Harvard University, July 17, 1998.
"Economic Analysis of the Kyoto Protocol," After Kyoto: Are There Rational Pathways to a Sustainable Global Energy System?, 1998 Aspen Energy Forum, Aspen, Colorado, July 6, 1998. Appendix: Tables and Charts of Effects on Energy Prices.