Van Jones

CNN Political Contributor; Author; Human Rights, Education & Clean Energy Advocate

Jason Schenker

Top-Ranked Economist, Best-Selling Author & President of Prestige Economics

Kate Brandt

Lead for Sustainability at Google & Former Chief Sustainability Officer for the Obama Administration

Doug Fine

Globe-Trotting Journalist, Award-Winning Climate Correspondent, Goat-Herder & Author

Katharine Hayhoe

Atmospheric Scientist, Professor of Political Science & Director of Climate Science Center at Texas Tech

Amin Toufani

Director of Strategy at Singularity University

Alex Honnold

Professional Rock Climber & Star of the Academy-Award Winning Documentary "Free Solo"

Monica Araya

Clean Mobility Advocate & Decarbonization Strategist

How cities are detoxing transportation | Monica Araya

Dr. Jill Stein

Physician, Environmental Activist & Politician; 2016 Green Party Presidential Nominee

Daniel Esty

Hillhouse Professor of Environmental Law and Policy at Yale Law School, Corporate Environmental Strategy Expert & Co-Author of "Green to Gold"

Daniela V. Fernandez

Founder & CEO of Sustainable Ocean Alliance

Chris Castro

Eco-Entrepreneur; Director of Sustainability for the City of Orlando

Vicki Arroyo

Environmental Policy Influencer

Michael Curley

Visiting Scholar at Environmental Law Institute

Nadine Hachach-Haram

Co-Founder Proximie, NHS Clinical Entrepreneur Fellow, Plastic Surgery Registrar at NHS, UCL Honorary Clinical Lecturer, Exponential Medicine Faculty and TED Speaker NHS

Daniel Poneman

President and CEO, Centrus Energy Corporation, Deputy Secretary of Energy (2009-2014) and Senior Fellow at Harvard Kennedy School

Dan W. Reicher

Executive Director, Center for Energy Policy and Finance Stanford Law School

Sivan Ya'ari

Founder and CEO, Innovation Africa

Danielle Fong

Entrepreneur & Inventor; Formerly Chief Science Officer and Co-Founder of LightSail Energy, Inc.

Moran Cerf

Neuroscientist & Business Professor at the Kellogg School of Management at Northwestern University