I'm the policy director of the Natural Resources Defense Council's (NRDC) Climate Center, and our chief global warming lawyer. I rejoined NRDC in March 2001 after serving for eight years in the Clinton administration, where I was director of climate change policy at the U.S. Environmental Protection Agency and, before that, counsel to the head of the EPA's clean air program. I also served for a year at the Council on Environmental Quality. This is my second stint at NRDC -- I first started here in 1978 and worked on clean air issues for the next 14 years, helping to win the Montreal Protocol to stop depletion of the ozone layer and the Clean Air Act amendments of 1990. Now we're working to pass legislation to cap and cut the pollution that causes global warming, and to reach a new treaty for global emission cuts.