Daniel Pauly

Daniel Pauly is the principal investigator at the Sea Around Us Project, which studies the impact of the world's fisheries on marine ecosystems. The software he's helped develop is used around the world to model and track the ocean.

Elayne Boosler

Comedian & Advocate for Animal Rescue; Founder of Tails of Joy

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Robert L. Vetere

Founder of the Human Animal Bond Research Initiative; Former President & CEO of the American Pet Products Association

Kristen Auerbach

Director of Pima County Animal Center

Robert Irwin

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

Robert Irwin Reveals His Most Feared Animal! | The Cheap Seats

Dr. Katy Nelson

Animal Health Expert, Host & Executive Producer of "The Pet Show with Dr. Katy"

Brad Pitt

Actor, Producer, Philanthropist & Environmental Activist

Willie Smits

Trained Forester, Microbiologist, Conservationist, Animal Rights Activist, Wilderness Engineer & Social Entrepreneur

Doug Fine

Globe-Trotting Journalist, Award-Winning Climate Correspondent, Goat-Herder & Author

Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Liz Bonnin

Award-Winning Science Expert & Broadcaster; Known for "Blue Planet Live" and "Drowning in Plastic"

Daphne Frias

Climate Change, Disability & Environmental Activist

Lena Samford

Environmentalist & Wellness Advocate

Dr. Nick "Ranger Nick" Fuhrman

Josiah Meigs Professor of Environmental Education & Nature TV Host

Darin Olien

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

Dr. Biruté Mary Galdikas

Award-Winning Conservationist, Author & Founder of the Orangutan Foundation International

Gabriela Cowperthwaite

Director, Writer & Producer; Best Known for the Documentary "Blackfish"

Dr. Sylvia Hood Washington

Chief Environmental Research Scientist at Environmental Health Research Associates, LLC.

Katharine Hayhoe

Atmospheric Scientist, Professor of Political Science & Director of Climate Science Center at Texas Tech, Lead Scientist with The Nature Conservancy

Saving Us: A Climate Scientist's Case for Hope and Healing in a Divided World

Joel K. Bourne Jr.

Author, Award-Winning Journalist & Consultant for Documentary Films & TV

Denis Hayes

Organizer of the First Earth Day; CEO of The Bullitt Foundation

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"

Sylvia Earle

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

Ellen DeGeneres

Award-Winning Comedian, TV Host, Actress & LGBTQ Activist

Kristen Bell

Actress & Film Producer; Known for "Veronica Mars" & "Frozen"

Quannah Chasinghorse

Indigenous Activist & Model

Quannah ChasingHorse on Representation, Climate Exploitation

Tala Dowlatshahi

Award-Winning Global Human Rights, Climate Change & Public Health Policy Expert; Former Senior Advisor for Stakeholder Engagement at the United Nations