Meg Lowman

National Geographic Explorer & Arbornaut

Kimi Werner

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

Danni Washington

TV Host, Science Communicator, Ocean Explorer & Nature Advocate

Rick Ridgeway

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

Brian Skerry

National Geographic Magazine Photographer, Specializing in Marine Wildlife & the Underwater World; Exploration & Conservation Speaker

Tristram Stuart

Environmental Campaigner, Author & Businessman

James E. Hansen

Adjunct Professor Directing the Program on Climate Science, Awareness and Solutions of the Earth Institute at Columbia University; Former Director at NASA Goddard Institute for Space Studies

Doug Fine

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

David Doubilet

National Geographic Photographer & Founding Member of the International League of Conservation Photographers

Mark Tercek

Former President & CEO of The Nature Conservancy

Denis Hayes

Organizer of the First Earth Day; CEO of The Bullitt Foundation

Jason Clay

Senior Vice President of Food & Markets at WWF

Barton Seaver

Celebrity Chef, Author & Sustainable Food Advocate; National Geographic Fellow; Ocean Conservationist

Sebastian Copeland

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

Chad Pregracke

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

Peter Gleick

Co-founder & President of the Pacific Institute for Studies in Development, Environment & Security

The Three Ages of Water

Daniel Esty

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

Ian Bowles

Environmentalist & Energy Expert; Co-Founder of WindSail Capital Group

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Sharona Shnayder

Environmental Activist & Founder of Tuesdays for Trash

Lena Samford

Environmentalist & Wellness Advocate

Sophia Kianni

Climate Activist & Founder of Climate Cardinals

Jamie Margolin

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

Cristina Mittermeier

Photographer, Adventurer & Co-Founder of SeaLegacy

Xiuhtezcatl Martinez

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

Sheila Watt-Cloutier

Environmental, Cultural & Human Rights Advocate, Former Canadian President of the Inuit Circumpolar Council

Dr. Sylvia Hood Washington

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

Kartik Chandran

Environmental Engineer & Professor at Columbia University

Tensie Whelan

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

Louie Psihoyos

Photographer & Documentary Film Director Known for the Academy Award-Winning Documentary "The Cove"