Associate Vice President and Lead Scientist, Environmental Defense Fund

Senior Fellow, Woods Institute for the Environment, Stanford University

Senior Vice President, Verisk Climate

Managing Director, Climate Policy Lab, Tufts University

Seed Nursery Manager, Lundberg Family Farms 

Chief Technology Officer, Monsanto

Electrician

Founder and Executive Director, Center for Food Safety

Professor of Nuclear Engineering, UC Berkeley

Director, Nuclear Safety Project, Union of Concerned Scientists

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

Professor of Geophysics, Stanford

Partner, Rhodium Group

Reporter, the Wall Street Journal

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, WaterSmart

CEO, Banyan Water and Chairman, Imagine H2O