Jeff Orlowski-Yang

Award-winning Filmmaker, Photographer, Entrepreneur & Climate Change Activist

Tiger Darrow

Austin Raised Singer Songwriter; Booker T. Washington High School -Dallas & NYU Graduate

Ric O'Barry

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

Dr. Jan Pol

Veterinarian; Star of Nat Geo Wild's "The Incredible Dr. Pol"

Elaine Hendrix

Actress & Animal Activist; Known for her Role in the Remake of "The Parent Trap"

Wallace J. Nichols

Scientist, Activist & Author Who Will Change the Way You Think About Water

Leland Melvin

Engineer, Former NASA Astronaut & Former NFL Wide Receiver

Christian Serratos

Actress, Best-known for her Role in the "The Twilight Saga" Series & "The Walking Dead"

Ziya Tong

Author of "The Reality Bubble" and Award-Winning Broadcaster

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

Evelyn Lozada

Fashion Contributor, Fitness Blogger & Reality TV Personality

Boyd Varty

Author of "Cathedral of the Wild," Speaker & Conservationist at Londolozi Game Reserve

Bindi Irwin

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

Jim O'Heir

Actor Starring in the NBC Comedy Series "Parks and Recreation"

Ernie Brown, Jr.

Known As "The Turtleman," He Stars on Animal Planet's "Call of the Wildman"

David Haskell

Biologist and Author; Finalist for the 2013 Pulitzer Prize

Simon Lovell

English Comedy Magician, Card Shark Actor and Con Man

Sergei Lupashin

Aerial Robotics Researcher & TED Fellow

Michael Nash

Film & Television Director; Best Known for "Climate Refugees"

Andy B. Casagrande

National Geographic Cameraman