The Rt. Hon. Dame Jacinda Ardern

Former Prime Minister of New Zealand

New Zealand Prime Minister Jacinda Ardern | Harvard ...

Alanis Morissette

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

Arnold Schwarzenegger

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

Be Useful: Seven Tools for Life

Sheryl Crow

Grammy Award-Winning Singer-Songwriter

Jamie Oliver

Celebrity Chef, Bestselling Author & TV Personality

Al Gore

45th Vice President of the United States, Nobel Peace Laureate & Bestselling Author

What the Fossil Fuel Industry Doesn't Want You To Know | Al Gore | TED

Leonardo DiCaprio

Award-Winning Actor & Environmentalist

Pierce Brosnan

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

Christiana Figueres

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

Sallie Krawcheck

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

Van Jones

CEO of REFORM Alliance, CNN host, Emmy Award-winning Producer & NY Times Best-Selling Author

Shailene Woodley

Actress & Environmental Activist

Aidan Gallagher

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

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

Ricardo Lagos

Former President of Chile

Robert Redford

Actor, Director, Producer, Environmentalist & Founder of the Sundance Film Festival

Livia Firth

Co-Founder & Creative Director of Eco-Age

Autumn Peltier

Canadian Indigenous Clean Water Activist

Amin Toufani

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

Ron Finley

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

Dr. Jane Goodall

Internationally Renowned Primatologist, Founder of the Jane Goodall Institute & UN Messenger of Peace