Aidan Gallagher

Actor, Musician & UN Environment Goodwill Program Ambassador; Known for "The Umbrella Academy"

Aidan Gallagher On 'The Umbrella Academy' and His Music | Seventeen

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

Holly Branson

Chair of Virgin Unite at Virgin & Co-Author of "WEconomy: You Can Find Meaning, Make A Living, and Change the World"

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

Neville Isdell

Former CEO and Chairman of Coca-Cola

Alex Honnold

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

Riley Green

Country Musician, Singer & Songwriter

Joe Tessitore

Play-by-Play Commentator, Studio Host

Charlize Theron

Academy Award-Winning Actress; Best Known for "Monster" & "Mad Max: Fury Road"

Brad Pitt

Actor, Producer, Philanthropist & Environmental Activist

Sophie Gregoire-Trudeau

Celebrated Mental Health & Gender Equality Advocate; Author of "Closer Together: Knowing Ourselves, Loving Each Other"

Closer Together: Knowing Ourselves, Loving Each Other

Carey Mulligan

Award-Winning Actress Known for "The Great Gatsby" & "Promising Young Woman"

Ken Salazar

United States Ambassador to Mexico; Former Secretary of the U.S. Department of the Interior

January Jones

Actress, Spokesperson for Oceana & Model, Best Known for her Role in "Mad Men"

Carrie Ann Inaba

"Dancing with the Stars" Judge, Founder of Carrie Ann Inaba Animal Project

Adrian Grenier

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

Edie Falco

Actress, Known for "The Sopranos" & "Nurse Jackie"

David Duchovny

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

Laura Dern

Actress, Director, Producer & Activist