Matt Damon

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

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Doc Hendley

Global Humanitarian, Clean Water Crusader, Top 10 CNN Hero, Sustainability Advocate

Van Jones

CEO of REFORM Alliance, CNN host, Emmy Award-winning Producer & NY Times Best-Selling Author

Robert Ballard

Renowned Ocean Explorer & Scientist

Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Rick Ridgeway

Environmentalist, Mountaineer, Expedition Author, Former VP of Environmental Initiatives & Special Projects at Patagonia

Harvey Wasserman

Journalist, Author, Democracy Activist & Advocate for Renewable Energy

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Daniel Esty

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

Bill Nussey

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

Tristram Stuart

Environmental Campaigner, Author & Businessman

Jonathan Trent

Former Director of Offshore Membrane Enclosures for Growing Algae; Founder of UpCycle Systems

John Passacantando

Former Executive Director of Greenpeace USA

David Suzuki

Environmentalist & Scientist; Co-Founder of the David Suzuki Foundation

Bill Nye

"The Science Guy"; Science Communicator, TV Presenter & Mechanical Engineer; Climate Change Activist

Joan Michelson

Co-Host of the Electric Ladies Podcast, ESG Consultant, Business Sustainability & Leadership Expert

Jamie Margolin

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

Michael Shellenberger

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

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

Mark Tercek

Former President & CEO of The Nature Conservancy

Jason Clay

Senior Vice President of Food & Markets at WWF

Mark Ruffalo

Actor, Director, Producer, Screenwriter & Environmental Activist

William McDonough

Renowned Architectural Designer, Advisor & Co-Author of "Cradle to Cradle + The Upcycle"

Joseph P. Kennedy II

Former Member of the U.S. House of Representatives & Founder of Citizens Energy Corporation

Chris Turner

Author, Sustainability & Global Cleantech Expert

Sebastian Copeland

Adventurer, Environmental Activist, Award-Winning Photographer, Author, Lecturer & Founder of the Sedna Foundation

Adrian Grenier

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

Al Gore

45th Vice President of the United States, Nobel Peace Laureate & Bestselling Author