Alexandra Cousteau

Environmental Activist, Ocean Advocate & Storyteller; Co-Founder, Oceans2050 & Senior Advisor, OCEANA

Sylvia Earle

Explorer in Residence at National Geographic, Founder of Mission Blue, Former NOAA Chief Scientist

Ayana Elizabeth Johnson

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

Dr. Sylvia Hood Washington

Founder & Chief Environmental Research Scientist for Environmental Health Research Associates, LLC; Founder & Director, One Drop Rule Rare Disease Foundation

Diva Amon

Marine Biologist, National Geographic Explorer, Deep-sea Researcher

Kehkashan Basu

Founder & President, Green Hope Foundation; Forbes 30 Under 30, United Nations Human Rights Champion & National Geographic Young Explorer

Katharine Hayhoe

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

Matt Damon

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

Alice Waters

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

Winona LaDuke

Environmental Activist & Author; Climate Justice, Renewable Energy & Sustainability Advocate; Executive Director of "Honor the Earth"

Natalie Kyriacou OAM

Environmental & Social Impact Leader, Australian Top Innovator & Australia’s Top ‘Green’ Voice

Aditi Mayer

Storyteller; Sustainability, Fashion, Environment & Social Justice Advocate

Bernadette Beck

Founder & CEO of Kindle Coffee & 1 for 1 Foundation; Actress & Journalist Known for "Riverdale"

Thimali Kodikara

Climate Storyteller & Host of "Mothers Of Invention" Podcast; Founder & Director, OneLoudBellow

Amali Tower

Founder & Executive Director of Climate Refugees; Member, Expert Network at World Economic Forum; Humanitarian & Human Rights Refugee Advocate

Jamie Margolin

Climate Change Activist; Founder & Co-Executive Director of Youth-Led Climate Action Group Zero Hour; Author of "Youth to Power"

As Teenagers, They Protested Trump’s Climate Policy. Now What?

Tensie Whelan

Director of NYU's Center for Sustainable Business; Former President of the Rainforest Alliance

Marla Spivak

Entomologist; Focused on Practical Applications to Protect Honey Bee Populations

David Doubilet

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

Mary Ellen Hannibal

Journalist & Author of "Citizen Scientist"

Heidi Cullen

Communications Director for Monterrey Bay Aquarium Research Institute; Climate Scientist

Chad Pregracke

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

Ashley Judd

Actress, Humanitarian, Political & Environmental Activist

Erin Brockovich

Famous Environmental Activist; Consumer Advocate & Bestselling Author; Groundwater Contamination Expert & Victim Advocate

Erin Brockovich Joins Doc 'Unearth' as Exec Producer (EXCLUSIVE)

Joan Michelson

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

Liz Bonnin

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

Amy Harder

Climate Change Journalist & Executive Editor of Cipher by Breakthrough Energy

Danni Washington

Science Communicator, TV Host, Environmental Advocate

Daniela V. Fernandez

Social Entrepreneurship, Thought Leader & Ocean Investor; Founder & CEO of Sustainable Ocean Alliance

Kate Brandt

Chief Sustainability Officer at Google & Nation's First Federal Chief Sustainability Officer for the Obama Administration