Matt Damon

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

Brad Pitt

Actor, Producer, Philanthropist & Environmental Activist

Jeff Orlowski-Yang

Award-winning Filmmaker, Photographer, Entrepreneur & Climate Change Activist

Adrian Grenier

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

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Viola Davis

Academy Award-Winning Actress, Producer & New York Times Best-Selling Author

Viola Davis on Speaking Up, Challenging Stereotypes

Pierce Brosnan

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

Leonardo DiCaprio

Award-Winning Actor & Environmentalist

Edward Norton

Award Winning Actor & Filmmaker

Cate Blanchett

Academy Award-Winning Actress Known for "Elizabeth" & "The Aviator;" Ambassador for the Australian Conservation Foundation

Mark Ronson

Award-Winning Music producer and DJ

Don Cheadle

Actor, Activist & Author; Known for "Iron Man 2" & "Hotel Rwanda"

Diane Guerrero

Immigration Reform Activist & Actress Known for "Orange is the New Black" & "Jane The Virgin"

Patricia Arquette

Academy Award-Winning Actress, Activist, Humanitarian & Author

Issa Rae

Actress, Writer, Director & Producer Known for HBO's "Insecure" & "Awkward Black Girl"

Aubrey Plaza

Actress, Comedian & Producer Known for NBC's "Parks and Recreation"

Sean Astin

Actor, Director, Voice Artist & Producer Known For "Lord of the Rings"

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Alicia Silverstone

Actress & Animal Rights Activist

Martin Scorsese

Academy Award-Winning Filmmaker Known for "Goodfellas," "Taxi Driver," "Silence" & "Killers of the Flower Moon"

Spike Lee

Academy Award-Winning Writer, Producer, Actor & Director; Best Known for "BlacKkKlansman" & "Malcolm X"

Laura Dern

Actress, Director, Producer & Activist

Alysia Reiner

Actor, Activist & Entrepreneur

Darren Aronofsky

Filmmaker & Director Known for "Black Swan" & "The Wrestler"

Jason Momoa

Actor, Producer, Environmental Activist, Known For "Aquaman" and "Game Of Thrones"

Marion Cotillard

Academy Award-Winning French Actress; Environmental Activist & Greenpeace Spokesperson

Amandla Stenberg

Actor, Singer & Activist Known for "The Hate U Give," "The Hunger Games" & "Everything, Everything"

Sophia Bush

Actress, Humanitarian & Author

Andy Serkis

Actor, Director & Author; Best Known as Gollum in the Lord of the Rings Trilogy

Ali Wong

Award-Winning Actor, Comedian & New York Times Best-Selling Author; Known for "Beef" & "Always Be My Maybe"

Ali Wong Wins Female Actor In A Limited Series, Anthology Series