Mark Ruffalo

Golden Globe-Winning Actor, Director, Screenwriter & Environmental Activist

Michael Shellenberger

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

Christiana Figueres

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

Kate Orff

Sustainable Landscape Architect; Time 100 Most Influential People in the World 2023; Founder of SCAPE

Donors Say Manresa Island in Connecticut Could Become a Park ...

Chad Pregracke

Founder of Living Lands & Waters, CNN's Hero of the Year for 2013, Environmental Speaker & Bestselling Author

Jae Rhim Lee

Artist and TED Fellow Jae Rhim Lee Re-Imagines the Relationships Between the Body and the World

Louie Psihoyos

Photographer & Documentary Film Director Known for the Academy Award-Winning Documentary "The Cove"

John Passacantando

Former Executive Director of Greenpeace USA

Mark Tercek

Former President & CEO of The Nature Conservancy

Jake Norton

World-Renowned Climber, Photographer & Humanitarian

Katie Cleary

Animal Advocate, Documentary Filmmaker, & Model; Known for "Give Me Shelter" and "Why on Earth"; President and Founder, Peace 4 Animals; Founder, World Animal News

Katie Cleary Shares Her Documentary "Protectors of the Wild"

Jonathan Trent

Former Director of Offshore Membrane Enclosures for Growing Algae; Founder of UpCycle Systems

Pink

Singer-Songwriter, Actress, Philanthropist & Environmental Activist

Hayden Panettiere

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

Emmanuelle Chriqui

Actress Known for "Entourage;" Social Advocate for Colon Cancer, Environmental Issues & Human Rights in Congo

Pulling Back The Hollywood Curtain: with Actress + Activist

Elaine Hendrix

Actress & Animal Activist; Known "The Parent Trap" and "Dynasty"

Elaine Hendrix – 2022 Celebrity Activist of the Year

Laurie David

Producer, Activist Author,The Family Dinner: Great Ways To Connect With Your Kids One Meal At A Time

Peter Singer

Bioethicist, Author of "Animal Liberation", Founder of The Life You Can Save

Peter Singer | Full Q&A at The Oxford Union

Leilani Munter

Environmental Activist, Retired Race Car Driver, Documentary Filmmaker

Joan Baez

Legendary Folk Musician & Human Rights Activist