Research Fellow, Steyer-Taylor Center for Energy Policy and Finance, Stanford

Director, Nuclear Safety Project, Union of Concerned Scientists

Professor of Nuclear Engineering, UC Berkeley

Reporter, the Wall Street Journal

Partner, Rhodium Group

Professor of Geophysics, Stanford

CEO, Six Seconds; Author, Inside Change

Author, "Ecological Intelligence"

Professor Emeritus of Cognitive Science and Linguistics, UC Berkeley

Former United States Special Envoy for Climate Change

CEO, mOasis 

CEO, Banyan Water and Chairman, Imagine H2O

CEO, WaterSmart

Former Mayor, Redwood City; Member, Metropolitan Transportation Commission

Executive Director, Bay Conservation and Development Commission

Chief of Staff, San Francisco International Airport

Sustainable Development Policy Director, SPUR