Christiana Figueres

Expert on Global Climate Change; Former Executive Secretary of the UN Framework Convention on Climate Change

Marcelo Mena Carrasco

Former Environment Minister of Chile

Jamie Margolin

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

Amy Harder

Climate Change Journalist & Executive Editor of Cipher by Breakthrough Energy

Tsechu Dolma

Founder, Mountain Resiliency project

Xiuhtezcatl Martinez

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

Dr. Sylvia Hood Washington

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

Achim Steiner

Director of the Oxford Martin School; Former Executive Director of the United Nations Environment Programme

Michael Shellenberger

Founder & President of Environmental Progress; Expert on Energy, Climate, Security, Human Development and Politics

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

Joan Baez

Legendary Folk Musician & Human Rights Activist

Al Gore

45th Vice President of the United States, Nobel Peace Laureate & Bestselling Author

Daphne Frias

Climate Change, Disability & Environmental Activist

Sophia Kianni

Climate Activist & Founder of Climate Cardinals

Kate Marvel

Climate Scientist & Author

Andrew Behar

CEO of As You Sow

Wanjira Mathai

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

Angelicque White

Biological Oceanographer

Luisa Neubauer

German Climate Protection Activist, Author & Member of The Green Youth

Vanessa Nakate

Ugandan Climate Justice Activist; Founder of Youth for Future Africa

Benjamin Strauss

Chief Scientist, President & CEO of Climate Central

Tim Flannery

Environmentalist, Explorer & Author

Tatiana Schlossberg

Award-Winning Journalist, Environmentalist, Author of "Inconspicuous Consumption: The Environmental Impact You Don't Know You Have" & Granddaughter of JFK

Cameron Hepburn

Professor of Environmental Economics & Director of the Smith School of Enterprise & the Environment at the University of Oxford

Bob Kopp

Climate Scientist, Geobiologist & Climate Policy Scholar at Rutgers University

Greta Thunberg

Climate Change Activist

The Climate Book: The Facts and the Solutions

Angel Hsu

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

Kate Brandt

Lead for Sustainability at Google & Former Chief Sustainability Officer for the Obama Administration

Mark Orlowski

Executive Director and, Founder Sustainable Endowments Institute

Kartik Chandran

Environmental Engineer & Professor at Columbia University