Bachelor, Yale University, 1975. Master of Science, American University, 1990.
Energy policy analyst, Connecticut Citizen Action Group, Hartford, 1975-1978;
energy policy analyst, Environmental Action Foundation, Washington, 1979-1982;
executive director, Environmental Action, Inc., 1983-1985;
executive director, League Conservation Voters, Washington, 1985-1988;
director climate change and energy policy, Union of Concerned Scientists, Washington, 1989-1992;
legislation director, Union of Concerned Scientists, Washington, 1992-1995;
director government relations, Union of Concerned Scientists, Washington, since 1995. Board directors Americans for Environment, Washington, 1983-1987, chairman, 1985-1987. Board directors Urban Environment Conference, Washington, 1984-1987, Zero Population Growth, since 1989.
President of the board directors Safe Energy Communication Council, Washington, 1980-1985. Chairman United States Climate Action Network, since 1990. Member state and local advisory board unites states department Energy, since 1994, member electrical systems reliability task force, since 1997.
Chairman board directors Washington Waldorf School, 2002^.