Gro Harlem Brundtland

Former Director-General, World Health Organization

Michael Sheldrick

Co-Founder, Global Citizen; Author of “From Ideas to Impact: A Playbook for Influencing and Implementing Change in a Divided World”

Mark Z. Jacobson

Director of the Atmosphere/Energy Program & Professor of Civil and Environmental Engineering at Stanford University

Mark Tercek

Former President & CEO of The Nature Conservancy

Daniel Esty

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

David Goodman

New York Times Best-Selling Author & Journalist

Bernard Kouchner

Former Minister of Health of France; Founder of Nobel Peace Prize-Winning Médecins Sans Frontières

Dr. Julio Friedmann

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

Edna Odhiambo

Independent Climate Consultant

Mari Copeny

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

Tom Rand

Entrepreneur, Venture Capitalist & Author

Annabelle Gurwitch

Actress & Humorist

Amalaonye Josephine Kachikwu

CEO of GIA Media Services, Greatness Coach & Brand Strategist; Award-Winning Author of "Ultimate Journey to Greatness"

Jonathan Trent

Former Director of Offshore Membrane Enclosures for Growing Algae; Founder of UpCycle Systems

Leah Thomas

Intersectional Environmentalist

Wanjira Mathai

Managing Director of Africa & Global Partnerships the the World Resources Institute; Sustainability & Youth Leadership Activist

Bjorn Lomborg

Political Scientist & Author of "The Skeptical Environmentalist"

Peter Gleick

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

The Three Ages of Water

Kathy Varol

Purpose Strategy Expert & Former Head of Global Purpose Strategy at Adidas

Drive Profit With Purpose. Become Remarkable.

Elizabeth Economy

C.V. Starr Senior Fellow & Director of Asia Studies at the Council on Foreign Relations

Laurie David

Producer, Activist Author,The Family Dinner: Great Ways To Connect With Your Kids One Meal At A Time

Emmanuelle Chriqui

Actress Known for "Entourage;" Social Advocate for Colon Cancer, Environmental Issues & Human Rights in Congo

Julia Collins

Founder & CEO of Planet FWD; Co-Founder of Zume Pizza

Calvin Mackie

Inspirational Entrepreneur & Mentor

Robert Kenner

Documentary Filmmaker; Known for "Food, Inc."

Alex Steffen

Author of "Carbon Zero: Imagining Cities That Can Save the Planet"

Louie Schwartzberg

Award-Winning Cinematographer, Director, Photographer and Filmmaker

Vedika Bhandarkar

Chief Operating Officer at Water.org

Carl Pope

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

Ambassador Munir Akram

Former Permanent Representative to the UN from Pakistan