Quannah Chasinghorse

Indigenous Activist & Model

Quannah ChasingHorse on Representation, Climate Exploitation

Darin Olien

Co-Host of Netflix "Down To Earth" with Zac Efron, Best-Selling; Original Formulator of "Shakeology;" Healthy Living & Superfoods Expert

Robert Irwin

Wildlife & Nature Conservationist, Photographer, Author, and TV Personality; Son of Steve Irwin, Owner of Australia Zoo

Robert Irwin Reveals His Most Feared Animal! | The Cheap Seats

Alex Honnold

Professional Rock Climber & Star of the Academy-Award Winning Documentary "Free Solo"

Tamron Hall

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

Watch Where They Hide

Lisa Vanderpump

Entrepreneur, TV Personality, Author & Philanthropist

Lisa Vanderpump Tells Us About Her First Times

Sophia Bush

Actress, Humanitarian & Author

Christiana Figueres

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

Matt Damon

Actor, Screenwriter & Producer; Co-Founder of Water.org; Expert Advocate on Global Water & Sanitation Crisis

Gary White

CEO & Co-Founder of WaterEquity & Water.org with Matt Damon

Maggie Q

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

Eric Stonestreet

Actor & Comedian, Best-Known for "Modern Family"

Cesar Millan

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

William McDonough

Renowned Architectural Designer, Advisor & Co-Author of "Cradle to Cradle + The Upcycle"

Alice Waters

Executive Chef, Founder & Owner of Chez Panisse; Sustainable Agriculture Advocate

Ian Somerhalder

Actor Known for "The Vampire Diaries"; Animal & Environmental Advocate; Founder of The Ian Somerhalder Foundation

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist; UN Ambassador

David Duchovny

Actor, Writer & Director Known for "The X-Files," "Aquarius" & "Californication"

Glenn Close

Actress & Advocate