Rick Ridgeway

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

Kristin Bauer van Straten

Best known as Pam on HBO's "True Blood"

David Suzuki

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

Amy Smart

Actress, Environmentalist & Co-Founder of Smart House Collections

Kelly Wearstler

Interior and Fashion Designer

Philippe Cousteau

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

Vandana Shiva

World-Renowned Environmental Leader

Selenis Leyva

Cuban-American Actress Known for Her Role as Gloria in "Orange is the New Black"

Leland Melvin

Engineer, Former NASA Astronaut & Former NFL Wide Receiver

Cesar Millan

Host of The Dog Whisperer; Author of Cesar's Way

Shaun Tomson

Former World Champion Surfer, Environmentalist & Motivational Speaker

Eric Roberts

Actor Known for his Roles in "Runaway Train," "The Dark Knight" and "Heroes"

Tamron Hall

Award-Winning Journalist; Former National News Anchor for NBC News; Host of the "Tamron Hall Show"

Watch Where They Hide

Dr. Jonathan Foley

World Leading Climate Scientist & Executive Director of Project Drawdown

Moby

Musician, DJ, Photographer

Alan Cumming

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

Torrey DeVitto

Actress, Model, Ambassador for NHPCO & Advocate

Ty Murray

Retired Professional Bull Rider; Seven Time All Around Champion

Roselyn Sanchez

Puerto Rican Singer-Songwriter, Model, Actress, Producer and Writer; Carmen Luna in "Devious Maids"

Alison Victoria

Interior Designer; Host of HGTV's "Kitchen Crashers"