Matt Damon

Actor, Screenwriter & Producer; Co-Founder of Water.org; Expert Advocate on Global Water & Sanitation Crisis

Alice Waters

Executive Chef, Founder & Owner of Chez Panisse; Sustainable Agriculture Advocate

Daphne Frias

Climate Change, Disability & Environmental Activist

Lena Samford

Environmentalist & Wellness Advocate

Xiuhtezcatl Martinez

Indigenous Climate Activist, Hip-Hop Artist, Author & Youth Director of Earth Guardians

Dr. Sylvia Hood Washington

Chief Environmental Research Scientist at Environmental Health Research Associates, LLC.

Michael Shellenberger

Founder & President of Environmental Progress; Expert on Energy, Climate, Security, Human Development and Politics

Tensie Whelan

Director of NYU's Center for Sustainable Business; Former President of the Rainforest Alliance

Will Allen

Pioneer in the Urban Farming Movement, Author & Founder of Growing Power

Gary White

CEO & Co-Founder of WaterEquity & Water.org with Matt Damon

Doug Fine

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

Edna Odhiambo

Independent Climate Consultant

Bill Nussey

Founder of the Freeing Energy Project; Partner at Tech Square Ventures & Engage

Sophia Kianni

Climate Activist & Founder of Climate Cardinals

Kimi Werner

Freedive-Spearfishing Champion, Certified Chef & Award-Winning Environmentalist

Jamie Margolin

Climate Change Activist; Author; Founder & Co-Executive Director of Youth-Led Climate Action Group "Zero Hour"

Danni Washington

TV Host, Science Communicator, Ocean Explorer & Nature Advocate

Jeff Orlowski-Yang

Award-winning Filmmaker, Photographer, Entrepreneur & Climate Change Activist

Tundi Agardy

Marine Conservationist & Founder of "Sound Seas," Research and Policy Project to Help Protect the Oceans and Ocean Life

Katharine Hayhoe

Atmospheric Scientist, Professor of Political Science & Director of Climate Science Center at Texas Tech, Lead Scientist with The Nature Conservancy

Saving Us: A Climate Scientist's Case for Hope and Healing in a Divided World

Christiana Figueres

Expert on Global Climate Change; Former Executive Secretary of the UN Framework Convention on Climate Change

Dr. Jonathan Foley

World Leading Climate Scientist & Executive Director of Project Drawdown

Mark Tercek

Former President & CEO of The Nature Conservancy

Mark Ruffalo

Actor, Director, Producer, Screenwriter & Environmental Activist

Philippe Cousteau

Explorer, Social Entrepreneur & Environmental Advocate; Grandson of Captain Jacques-Yves Cousteau

Robert Ballard

Renowned Ocean Explorer & Scientist

Chad Pregracke

Founder of Living Lands & Waters, CNN's Hero of the Year for 2013, Environmental Speaker & Bestselling Author

Winona LaDuke

Executive Director of Honor the Earth

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist; UN Ambassador