Alexandra Horowitz

Professor of Psychology, Animal Behavior, and Canine Cognition; Bestselling Author of "Inside of a Dog: What Dogs See, Smell and Know"

Bindi Irwin

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

Bob Baffert

Legendary Triple Crown-Winning Horse Trainer

Carlton Ward Jr.

Conservation Photographer & National Geographic Explorer; Founder of Florida Wild

Christian Serratos

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

Christiana Figueres

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

Danny Trejo

Actor, Author, Activist & Restaurateur; Recovery & Intervention Counselor for Troubled Youth

Denise Richards

Actress, Former Fashion Model & Reality Star on Bravo's "The Real Housewives of Beverly Hills"

Dennis Dimick

Former Executive Environment Editor at National Geographic Magazine

Hayden Panettiere

Actress Known for "Nashville" & "Heroes" & Animal Rights Activist

Howard G. Buffett

Businessman, Philanthropist & Elder Son of Warren Buffet

Joel Sartore

National Geographic Photographer & Author

Lisa Edelstein

Actress, Director, Writer & Producer

Maggie Q

TV & Film Actress, Known for Lead Role in CW's "Nikita"

Mena Suvari

Actress Known for "American Beauty" & Author of "The Great Peace: A Memoir"

Michael Shellenberger

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

Paul Rosolie

Conservationist, Writer, Filmmaker, Founder of Junglekeepers, Protecting 55000+ acres of Amazonian Habitat & Wildlife

How creative & emotive communication conserved 55,000 acres of Peru’s Amazon

Portia de Rossi

Actress, Known for"Ally McBeal" & "Arrested Development."

Steve Winter

Wildlife Photojournalist

Tiger Darrow

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