Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Mark Lynas

Environmental Writer; Author of "Our Final Warning: Six Degrees of Climate Emergency"

Jason Clay

Senior Vice President of Food & Markets at WWF

Louie Schwartzberg

Award-Winning Cinematographer, Director, Photographer and Filmmaker

Dr. Mike Magee

President of Positive Medicine, Inc., Health Journalist & Author

Dennis Avery

Former Director, Center for Global Food Issues at the Hudson Institute

Raj Patel

Award-Winning Writer, Food Politics Activist, Filmmaker & Academic

Peter Gleick

Co-founder & President of the Pacific Institute for Studies in Development, Environment & Security

The Three Ages of Water

Jonathan Merritt

Award-Winning Faith & Culture Writer

Andrew Revkin

Senior Fellow for Environmental Understanding at Pace University

Robert Kenner

Documentary Filmmaker; Known for "Food, Inc."

Lori Dennis

Celebrity Interior Designer, Green Living Expert, Influencer, & Author

Barton Seaver

Celebrity Chef, Author & Sustainable Food Advocate; National Geographic Fellow; Ocean Conservationist

Marc Abrahams

Creator of the Ig Nobel Prizes

Gary Hirshberg

Co-Founder & Chief Organic Optimist of Stonyfield Farm

Carl Pope

Senior Advisor to UN Envoy for Cities and Climate; Former CEO and Chairman of the Sierra Club

Heidi Cullen

Communications Director for Monterrey Bay Aquarium Research Institute; Climate Scientist

Wes Jackson

Founder and Former President of The Land Institute

Shahram Chubin

Nonresident senior associate in the Carnegie Nuclear Policy Program. Based in Geneva, Chubin’s research focuses on nonproliferation, terrorism, and Middle East security issues.

Judith Levine

Journalist, Author, and Activist

James E. Hansen

Adjunct Professor Directing the Program on Climate Science, Awareness and Solutions of the Earth Institute at Columbia University; Former Director at NASA Goddard Institute for Space Studies

Calvin Mackie

Inspirational Entrepreneur & Mentor

John Sununu

Former Republican (GOP) United States Senator from New Hampshire

Richard Rhodes

We Were Just Focused on How to Survive

George Elvin

Green Innovation Speaker & Author

Fred Kent

Founder & President of Project for Public Spaces

Patrick J. Michaels

Senior fellow at the Cato Institute & Research Professor of Environmental Sciences at the University of Virginia

Patrick Meier

Founder of Climate Robotics Network; Creator of the Concept of Crisis Mapping

Patrick Meier | TEDxMombasa - Robots vs. Climate Crisis

Bruce Vincent

Agriculture Activist and Motivational Speaker

Naomi Oreskes

Geologist & Earth Science Historian