Dr. Douglas Vakoch

Founder & President of METI—Messaging Extraterrestrial Intelligence

The search for extraterrestrials | Douglas Vakoch | TEDxGreenville

Stacy-Ann Gooden

Meteorologist

Greta Thunberg

Climate Change Activist

'Now I Am Speaking to the Whole World.' How Teen Climate Activist

Mark Mathis

President of Clear Energy Alliance

Pierre Thiam

Chef, Activist & Author

Jennifer Wilcox

Chemical Engineering Professor

Maeve Higgins

Comedian, Podcast Host & Author of "Maeve in America: Essays by a Girl from Somewhere Else"

Mario J. Molina

Lee and Geraldine Martin Professor of Environmental Sciences, Massachusetts Institute of Technology

Tom Fitton

American Conservative Activist & President of Judicial Watch

Sheila Watt-Cloutier

Environmental, Cultural & Human Rights Advocate, Former Canadian President of the Inuit Circumpolar Council, Former International Chair of the ICC, TEDx Speaker

Zaria Forman

TED Speaker, Artist & Climate Change Activist

Dan W. Reicher

Executive Director, Center for Energy Policy and Finance Stanford Law School

Robert Muggah

Co-Founder of the Igarapé Institute & The SecDev Group; Research Director and Program Coordinator for Citizen Security

Jeff Orlowski

Award-winning Filmmaker, Photographer, Entrepreneur, Climate Change Activist

Meet the Artist '17: Jeff Orlowski - YouTube

Katharine Hayhoe

Atmospheric Scientist, Professor of Political Science & Director of Climate Science Center at Texas Tech

James Redford

Documentary Filmmaker and Co-founder of The Redford Center

Annie Griffiths

Award-Winning Photographer for National Geographic

David Doubilet

National Geographic Photographer, Speaker & Author

Every Rolex Tells a Story — David Doubilet

Bertrand Piccard

First to circumnavigate the globe non-stop in a hot air balloon

Pat Wood

Former Chairman of the Federal Energy Regulatory Commission