John Grogan

Author of the #1 National Best-Seller "Marley & Me: Life and Love with the World's Worst Dog"

Chris Palmer

Distinguished Film Producer in Residence and Director of the Center for Environmental Filmmaking School of Communication, American University.

Autumn Reeser

Known for her Roles in "The O.C.," "Entourage," "Necessary Roughness" & "Hawaii 5-0"

Nathan Myhrvold

Founder of Intellectual Ventures; Former Chief Strategist & Chief Technology Officer of the Microsoft Corporation; Author of “Modernist Cuisine: The Art and Science of Cooking"

Dan Riskin

Canadian Evolutionary Biologist, Television Personality & Former Host of Daily Planet

Tia Torres

Pitbull Advocate & Rescuer Known for Animal Planet's "Pit Bulls & Parolees"

Denis Hayes

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

Simon Lovell

English Comedy Magician, Card Shark Actor and Con Man

Laurie David

Producer, Activist Author,The Family Dinner: Great Ways To Connect With Your Kids One Meal At A Time

David Doubilet

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

Jack Hanna

Naturalist, Adventurer & Director Emeritus of the Columbus Zoo

Eric Goode

Entrepreneur, Conservationist, CEO of The Turtle Conservancy & Director of Netflix's "Tiger King"

Alan Cumming

Emmy-Winning Actor Who Stars in "The Good Wife"

Corey Feldman

Actor Known for Movies Like "The Goonies" and "Stand By Me"

Dr. Jill Stein

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

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"

Sebastian Copeland

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

Erin Schrode

Expert Advocate for Health, Sustainability & Environmental Education; Named "America's Green Girl" by OK Magazine

Heidi Cullen

Communications Director for Monterrey Bay Aquarium Research Institute; Climate Scientist