Fellow, Resources for the Future, 1996 - present.

 

Senior Staff Economist, National Commission on Energy Policy, 2002 - present.

 

Senior Staff Economist, Council of Economic Advisers, 2001 - 2002.

 

Visiting Scholar, Stanford University, 2000 - 2001.

 

Visiting Assistant Professor, The Johns Hopkins University, 1997 - 1999.

 

Researcher and Teaching Fellow, Harvard University, 1992 - 1996.

 

 

 

Member, Second Generation Model (SGM) Review Panel, Science Advisory Board, U.S. E.P.A.

 

Lead Author, Intergovernmental Panel on Climate Change, Working Group III, Fourth Assessment Report, Chapter 11, 2004-2006.

 

Outside Reviewer for U.S. Government, Intergovernmental Panel on Climate Change, Working Group III, Third Assessment Report, Chapters 2 and 7, June 2000.

 

Contributing Author, Intergovernmental Panel on Climate Change, Working Group III, Third Assessment Report, Chapter 6, October 1999.

 

Assistant Reviewer, Energy Information Administration, "Analysis of the Kyoto Protocol," July 1998.

 

 

 

Panelist, Meridian International Institute, Forum on a Greenhouse Gas Accounting System, Washington, D.C., July 2002.

 

Panelist, MIT Global Climate Change Forum, Forces Pushing For Convergence, June 2002.

 

Panelist, The Control of Greenhouse Gas Emissions: Policy Options and Technology Requirements, Society of Automotive Engineers, May 2002.

 

Panelist, "Role of Cost Benefit Analysis in Developing Environmental Policy," Environmental Law Institute, Ward Kershaw Environmental Symposium: Developing Environmental Policy in the Shadow of the War on Terrorism, April 2002.

 

Participant, Ecological Forecasting Working Group, University of California at Santa Barbara, October 2000.

 

Climate Policy Discussions, State of Israel, Ministry of Environment, November 1999.

 

Invited Speaker, 6th Ulvön Conference on Environmental Economics, Sweden, June 1999.

 

Participant, Johns Hopkins University Workshop on Evaluating Tradeoffs and Risk in Integrated Assessment, June 1998.

 

Discussant, "Total Resource Productivity: Accounting for Changing Environmental Quality" (by Frank Gollop and Gregory Swinand), National Bureau of Economic Research (NBER) Conference on Research in Income and Wealth, March 1998.