Livia Firth

Co-Founder & Creative Director of Eco-Age

Tristram Stuart

Environmental Campaigner, Author & Businessman

Molly Sims

Actress, Model & Lifestyle Expert; Environmental & Ocean Activist

Bill Nye

"The Science Guy"; Science Communicator, TV Presenter & Mechanical Engineer; Climate Change Activist

Van Jones

CEO of REFORM Alliance, CNN host, Emmy Award-winning Producer & NY Times Best-Selling Author

Sylvia Earle

Explorer-in-Residence at National Geographic & Oceanographer; Former Chief Scientist of the NOAA

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Paul Wheaton

Permaculture Advocate

Natalie Kyriacou OAM

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

Diva Amon

Star of "Welcome to Earth" on Disney+; Caribbean Marine Biologist & 2022 Pew Fellow

Neeshad Shafi

Sustainability Futurist, Social Change Advocate & Expert on Climate Policy in the Middle East; Founder of Arab Youth Climate Movement Qatar

Edna Odhiambo

Independent Climate Consultant

Deborah Brosnan

Founder & President of Deborah Brosnan & Associates

Cecilia Martinez

Co-Founder & Executive Director of the Center for Earth, Energy, and Democracy

Kehkashan Basu

Forbes 30 under 30, United Nations Human Rights Champion, National Geographic Young Explorer & Founder-President of Green Hope Foundation

Nigel Topping

High Level Climate Action Champion

Nathaniel Stinnett

Founder & Executive Director of the Environmental Voter Project

Wanjira Mathai

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

Lauren Singer

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

Ben Caldecott

Founding Director of the Oxford Sustainable Finance Programme & Associate Professor at the University of Oxford

Mari Copeny

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

Martin Keller

Director of National Renewable Energy Laboratory & President of Alliance for Sustainable Energy

Bob Kopp

Climate Scientist, Geobiologist & Climate Policy Scholar at Rutgers University

Dallas Goldtooth

Keep it in the Ground Organizer for the Indigenous Environmental Network & Co-Founder of the Indigenous Comedy Group

Nick Tilsen

Native American Activist, Director of the Thunder Valley CDC

Xiuhtezcatl Martinez

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

Marcus Scribner

Two-Time NAACP Image Award-Winning Actor Known for ABC's "Black-ish" & Founder of Scribner Productions

Dr. Sylvia Hood Washington

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

Davida Herzl

Co-Founder & CEO, Aclima

Collision Keynote: Davida Herzl

Nina Fedoroff

Molecular Biologist; Biotechnology Expert & Professor of Biology at Penn State