Senior Scientist, Stockholm Environmental Institute

Deputy Executive Officer, California Air Resources Board

Director, Berkeley Carbon Trading Project, Goldman School of Public Policy, UC Berkeley

Climate Justice Campaigner, Amazon Watch

Executive Director, Taking Root

Executive Director, Ecotrust Uganda

President and CEO, Detroiters Working for Environmental Justice

Lecturer, Harvard University Graduate School of Design

Founder, Make the Homeless Smile

Distinguished Professor of Urban Planning and Environmental Policy, Texas Southern U.

Former CEO, British Petroleum

Author, We Are the Weather: Saving the Planet Begins at Breakfast

Associate Professor, Department of Social and Behavioral Sciences, UCSF

CEO, Aero Technologies