Jake Gyllenhaal

Academy Award-Nominated & BAFTA Award-winning Actor; Environmental Activist

Maroon 5

American Pop/Rock Band Known for the Hit Singles, "Maps," "Love Somebody" & "Misery"

Shailene Woodley

Actress & Environmental Activist

Alysia Reiner

Actor, Activist & Entrepreneur

Christiana Figueres

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

Michael Shellenberger

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

Tony Juniper

Writer, Sustainability Advisor, & Environmentalist

Emmanuelle Chriqui

Actress Known for "Entourage;" Social Advocate for Colon Cancer, Environmental Issues & Human Rights in Congo

Bindi Irwin

Wildlife Conservationist & Daughter of Steve Irwin; Season 21 Contestant on "Dancing With the Stars"

Ric O'Barry

Wildlife Activist, Author & Founder of the Dolphin Project; Star of the Academy Award-Winning Documentary "The Cove"

Louie Psihoyos

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

Jonathan Trent

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

Keith Colburn

Safety & Sustainable Fisheries Advocate; Captain of The Wizard on Discovery Channel's "Deadliest Catch"

Laurie David

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

Joan Baez

Legendary Folk Musician & Human Rights Activist

Naomi Oreskes

Geologist & Earth Science Historian

Carl Pope

Senior Advisor to UN Envoy for Cities and Climate; Former CEO and Chairman of the Sierra Club

Monica Pedersen

Designer; Host on HGTV's "Designed To Sell" & "Bang For Your Buck"

Sy Montgomery

Naturalist, Adventurer & Author of "The Good Good Pig" & "The Soul of an Octopus"

Secrets of the Octopus

Mark Tercek

Former President & CEO of The Nature Conservancy