Dr. Nick "Ranger Nick" Fuhrman

Josiah Meigs Professor of Environmental Education & Nature TV Host

Kimi Werner

Freedive-Spearfishing Champion, Certified Chef & Award-Winning Environmentalist

Lauren Singer

Advocate for Zero Waste, Blogger & Founder of The Simply Co.

Amy Harder

Climate Change Journalist & Executive Editor of Cipher by Breakthrough Energy

Xiuhtezcatl Martinez

Indigenous Climate Activist, Hip-Hop Artist, Author & Youth Director of Earth Guardians

Sheila Watt-Cloutier

Environmental, Cultural & Human Rights Advocate, Former Canadian President of the Inuit Circumpolar Council

Naomi Oreskes

Geologist & Earth Science Historian

Carl Pope

Senior Advisor to UN Envoy for Cities and Climate; Former CEO and Chairman of the Sierra Club

Monica Pedersen

Designer; Host on HGTV's "Designed To Sell" & "Bang For Your Buck"

Doug Fine

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

Hindou Oumarou Ibrahim

President of the Association for Indigenous Women & Peoples of Chad (AFPAT)

Sy Montgomery

Naturalist, Adventurer & Author of "The Good Good Pig" & "The Soul of an Octopus"

Secrets of the Octopus

Angel Hsu

Assistant Professor at the University of North Carolina-Chapel Hill & Founder/Director of the Data-Driven EnviroPolicy Lab

Mark Tercek

Former President & CEO of The Nature Conservancy

Ruth Wilson Gilmore

Professor of Geography at City University of New York & Associate Director of the Center for Place, Culture and Politics

Anthony Moffett

Former Member of the U.S. House of Representatives

Nathaniel Stinnett

Founder & Executive Director of the Environmental Voter Project

Alejandro Durán

Artist Who Collects Trash From the Oceans and Turns It Into Disquieting Works of Art

David Doubilet

National Geographic Photographer & Founding Member of the International League of Conservation Photographers

Eric Goode

Entrepreneur, Conservationist, CEO of The Turtle Conservancy & Director of Netflix's "Tiger King"