Alysia Reiner

Actor, Activist & Entrepreneur

Steve LeVine

Writer at The Electric; Expert on Batteries, Electric Vehicles, and their Impact on Society, Cities & Geopolitics

Achenyo Idachaba

Head of MitiMeth, A Nigeria-Based Environmentally Aware Production Company

Michael Shellenberger

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

Dr. Eric Scerri

UCLA Chemist, Author, Educator, Historian and Philosopher of Science

Sarah Kauss

Founder of S'well, Advisor, Investor & Advocate

Alex Epstein

Founder, Center for Industrial Progress Author, Fossil Fuels Improve the Planet

Ric O'Barry

Wildlife Activist, Author & Founder of the Dolphin Project; Star of the Academy Award-Winning Documentary "The Cove"

Katie Spotz

World Record-Breaking Endurance Athlete & Safe Water Activist

Jennifer Pharr Davis

Long-Distance Hiker & Author; Overall Record Holder on the Appalachian Trail & The First Woman to Set That Mark

Outdoor School: Hiking and Camping: The Definitive Interactive Nature Guide

Joanne Manaster

Biology Lecturer & STEM Education Advocate

Ann McElhinney

Documentary Filmmaker Known For "FrackNation," "Not Evil Just Wrong" & "Mine Your Own Business"

Peter Zeihan

Energy & Geopolitical Strategist, Author of "The Absent Superpower" & "The Accidental Superpower"

Christiana Figueres

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

Annie Griffiths

Award-Winning Photographer for National Geographic

Paul Polman

Business Leader; Climate & Equality Campaigner; Co-Author of “Net Positive”

Ellen MacArthur

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

Becky McCray

Small-Town Entrepreneur, Cattle Rancher & Co-Founder of SaveYour.Town

Marty Metro

Founder & CEO of UsedCardboardBoxes and UCBZeroWaste

Naomi Oreskes

Geologist & Earth Science Historian

Pat Wood

CEO of the Hunt Energy Network; Former Chairman of the Federal Energy Regulatory Commission

Steve Goreham

Engineer, Author & Authority on Environmental and Energy Issues

Michael Nichols

Journalist, Photographer & Founder of the LOOK3 Festival of the Photograph

Miki Agrawal

Author of "Do Cool Sh*t" & "Disrupt-Her: A Manifesto for the Modern Woman"

Louie Psihoyos

Photographer & Documentary Film Director Known for the Academy Award-Winning Documentary "The Cove"

Laurence Tribe

Carl M. Loeb University Professor at Harvard Law School & Author

Barbara Boxer

Former Democratic Senator of California

Celine Cousteau

Environmental Activist, Storyteller & Author

Céline Cousteau's Speaker Reel

Joel Sartore

National Geographic Photographer & Author

Marc Freedman

Founder & CEO of Encore.org; World Economic Forum Social Entrepreneur of the Year