Climate Scientist, Carnegie Institution for Science, Stanford University

Author, Coal Wars: The Future of Energy and the Fate of the Planet

Author, "The Ministry for the Future"

Editor, Sierra Magazine

Secretary, U.S. Department of Housing and Urban Development

Vice President of Brand Strategy and Planning, Walmart

Former VP, Tesla; Producer, Before the Flood

Singer and Songwriter

Senior Corporate Campaigner, Greenpeace International

Director, Sustainable Operations, eBay

Global Director, Energy and Sustainability Strategy, Yahoo!

Founder and Executive Director, ClimateVoice; Former Green Energy Czar, Google

Director of Board Governance & Strategy, CalPERS

CEO, Carbon Tracker Initiative

Founding Director, Center on Global Energy Policy, Columbia University

Chairman and CEO, BP Capital