Van Jones

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

Sylvia Acevedo

Engineer, Rocket Scientist & Technology Leader; Inspirational Speaker; Corporate Director at Qualcomm; Former CEO of Girl Scouts USA

How Sylvia Acevedo Defied Barriers to Become Girl Scout CEO

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Alice Waters

Executive Chef, Founder & Owner of Chez Panisse; Sustainable Agriculture Advocate

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Sylvia Earle

Explorer-in-Residence at National Geographic & Oceanographer; Former Chief Scientist of the NOAA

Ayana Elizabeth Johnson

Marine Biologist, Conservation Strategist, Founder & CEO of Ocean Collectiv

What If We Get It Right?: Visions of Climate Futures

Jeff Orlowski-Yang

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

Sophia Bush

Actress, Humanitarian & Author

Patricia Arquette

Academy Award-Winning Actress, Activist, Humanitarian & Author

Robert Ballard

Renowned Ocean Explorer & Scientist

Adrian Grenier

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

Michael Shellenberger

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

David Suzuki

Environmentalist & Scientist; Co-Founder of the David Suzuki Foundation

Alicia Silverstone

Actress & Animal Rights Activist

Ramez Naam

Computer Scientist, Science Fiction Author & Co-Chair of Energy & Environment at Singularity University

Gary White

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

Christiana Figueres

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

William McDonough

Renowned Architectural Designer, Advisor & Co-Author of "Cradle to Cradle + The Upcycle"

Amy Brenneman

Actress, perhaps best known for her roles on "NYPD Blue," "Judging Amy," and "Private Practice"

Hayden Panettiere

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

Pattie Gonia

Queer Environmentalist; Drag Queen Building Community for Queer People, Allies & the Planet

Darin Olien

Co-Host of Netflix "Down To Earth" with Zac Efron, Best-Selling; Original Formulator of "Shakeology;" Healthy Living & Superfoods Expert

Mari Copeny

Youth Activist for Access to Clean Water; Known as "Little Miss Flint"

Robert Irwin

Wildlife & Nature Conservationist, Photographer, Author, and TV Personality; Son of Steve Irwin, Owner of Australia Zoo

Emmy Rossum

Actress Known for Showtime's "Shameless" & Singer-Songwriter

Alyssa Milano

Actress, Author, Philanthropist & Founder of Touch by Alyssa Milano; Known for "Charmed" and "Who's the Boss"

Daryl Hannah

Actress, Best Known for "Kill Bill" & "Splash"; Environmental Activist

Vandana Shiva

World-Renowned Environmental Leader