Shaun Tomson

Former World Champion Surfer, Environmentalist & Motivational Speaker

Robert Ballard

Renowned Ocean Explorer & Scientist

Alice Waters

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

Dr. Tierney Thys

Marine Biologist, Educator & Filmmaker

David Suzuki

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

Rachael Ray

Chef, Cookbook Author & Television Host Known for the "Rachael Ray Show"

Chad Pregracke

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

Hayden Panettiere

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

Alyssa Milano

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

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Van Jones

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

Adrian Grenier

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

Peter Gleick

Co-founder & President of the Pacific Institute for Studies in Development, Environment & Security

The Three Ages of Water

Daniel Esty

Hillhouse Professor of Environmental Law and Policy at Yale Law School, Corporate Environmental Strategy Expert & Co-Author of "Green to Gold"

Ian Dunbar

World Famous Veterinarian, Dog Trainer, and Writer

Vanessa Chakour

Author, Herbalist, Former Pro-Boxer, Environmental Activist & Founder of Sacred Warrior

Dr. Kwane Stewart

Founder of Project Street Pet, Veterinarian & CNN's Hero of the Year 2023

CNN Hero of the Year makes surprise announcement

Alex Schulze

Co-Founder & CEO of 4ocean; Advocate for Ocean Cleanup, Conservation & Sustainability

Conversation with Alex Schulze, CEO and Co-Founder of 4ocean

Kitty Block

President & CEO at The Humane Society

Kitty Block - BBB Wise Giving Alliance

Tarun Nayar

Electronic Musician & Former Biologist; Bringing “Plant Music” to the Masses

Tarun Nayar's words to the Class of 2020

Chelsea Miller

Leading Voice in Racial Justice; Co-Founder of Freedom March NYC

Co-Founder Chelsea Miller Talks About Her Non-Profit Webelieve

Otaigo Elisha

Founder of NovFeed; Milken-Motsepe Agritech Grand Prize Winner

Meg Lowman

National Geographic Explorer & Arbornaut

Riddhima Yadav

Climate Strategist & Sustainability Business Leader

Dr. Julio Friedmann

Chief Scientist at Carbon Direct & Non-Resident Fellow at the Center on Global Energy Policy at Columbia University SIPA

Joan Michelson

Co-Host of the Electric Ladies Podcast, ESG Consultant, Business Sustainability & Leadership Expert

Neeshad Shafi

Sustainability Futurist, Social Change Advocate & Expert on Climate Policy in the Middle East; Founder of Arab Youth Climate Movement Qatar

Destiny Watford

Storyteller & Environmental Activist

Peter Kalmus

Climate Scientist & Author

Samuel Ramsey

Entomologist; Science Communicator; Founder & Director of the Ramsey Research Foundation