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

Livia Firth

Co-Founder & Creative Director of Eco-Age

The Rt. Hon. Dame Jacinda Ardern

Former Prime Minister of New Zealand

Marcus Scribner

Two-Time NAACP Image Award-Winning Actor Known for ABC's "Black-ish" & Founder of Scribner Productions

Amin Toufani

CEO of T Labs, Creator of Adaptability.org, Chair for Finance & Economics at Singularity University

Nikolaj Coster-Waldau

Actor Known for his Role as Jamie Lannister on HBO's "Game of Thrones"

Ron Finley

Grower of a Nourishing Food Culture in South Central L.A.’s Food Desert

Christiana Figueres

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

Dennis Dimick

Former Executive Environment Editor at National Geographic Magazine

Sallie Krawcheck

Founder & CEO of Ellevest; Author of "Own It: The Power of Women at Work"

Pierce Brosnan

Actor, Producer & Activist; Best Known for His Role as James Bond

Leonardo DiCaprio

Award-Winning Actor & Environmentalist

Alanis Morissette

Alt-Rock Angst Icon Known for "You Oughta Know" & "Ironic"

Shailene Woodley

Actress & Environmental Activist

Gary White

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

Arnold Schwarzenegger

Actor, Producer, Director, Writer; California’s 38th Governor; Host of "Celebrity Apprentice"

Vandana Shiva

World-Renowned Environmental Leader

Mike Love

Lead Singer and a Founding Member of The Beach Boys.

Sheryl Crow

Grammy Award-Winning Singer-Songwriter