Annie Leonard

American Proponent of Sustainability and a Critic of Excessive Consumerism

George Monbiot

Investigative Journalist, Known for his Environmental & Political Activism

Cassandra Moseley

Director of the Ecosystem Workforce Program in the Institute for a Sustainable Environment at the University of Oregon

Stephen J. Pyne

Senior Sustainability Scientist, Global Institute of Sustainability, and Regents' Professor, School of Life Sciences, at Arizona State University

Patricia Arquette

Academy Award-Winning Actress, Activist, Humanitarian & Author

Lamman Rucker

Actor, Education Activist, Green Living Advocate & Entrepreneur

Jimmy Chin

Climber, Photographer & Filmmaker

Ron Finley

Grower of a Nourishing Food Culture in South Central L.A.’s Food Desert

Sophia Bush

Actress, Humanitarian & Author

Ellen MacArthur

Former Long-Distance Yachtswoman & Founder of the Ellen MacArthur Foundation

Naomi Oreskes

Geologist & Earth Science Historian

Laura Stachel, M.D., M.P.H

Co-Founder of WE CARE Solar, a Company that Fights to Combat High Maternal Mortality Rates in Developing Countries

Walter Robb

Food Retail Expert & Food Access Advocate; Principal at Stonewall Robb Advisors; Former Co-CEO of Whole Foods Market

David Trimble

Director of Natural Resources and Environment at the Government Accountability Office.

Mark Moffett

Entomologist, Nature Photographer & Author

Olivia Munn

Television & Film Actress; Known for "Newsroom" & "X-Men: Apocalypse"

Olivia Munn on Jon Stewart | 2022 Mark Twain Prize

Chris Bashinelli

National Geographic Explorer & TV Host | United Nations Moderator | Arab-American Diversity Speaker | Expert on Human Connection & Humanity in Business

Chris Bashinelli - Diversity, Equity & Inclusion

Jake Gyllenhaal

Academy Award-Nominated & BAFTA Award-winning Actor; Environmental Activist

Amy Smart

Actress, Environmentalist & Co-Founder of Smart House Collections

Frans Lanting

Wildlife Photographer