Amber Jenkins

Applied Science Engineer, NASA’s Jet Propulsion Laboratory; Editor, NASA Climate Change Website

Bill Richardson

Former Governor of New Mexico; Former U.S. Energy Secretary

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

The Future in 2050 with Dr. Michio Kaku & Alex Klokus | #

Gary Snyder

Poet, Essayist, Lecturer and Environmental Activist

Hilary Swank

Academy Award-Winning Actress; Best known for her roles in 'Million Dollar Baby' and 'Boys Don't Cry'

Ian Somerhalder

Actor Known for "The Vampire Diaries;" Animal & Environmental Advocate; Founder of The Ian Somerhalder Foundation

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

Jason Clay

Senior Vice President of Food & Markets at WWF

Jenna Marbles

YouTube Sensation

Lamman Rucker

Actor, Education Activist, Green Living Advocate & Entrepreneur

Louie Schwartzberg

Award-Winning Cinematographer, Director, Photographer and Filmmaker

Melissa Rivers

Actress, Television Host & Producer, Equestrienne, and Philanthropist; Daughter of Late Comedian Joan Rivers

Roselinde Torres

Senior Partner and Managing Director at the consulting firm, BCG.

Sophia Bush

Actress, Humanitarian & Author

Tensie Whelan

Director of NYU's Center for Sustainable Business; Former President of the Rainforest Alliance

Tensie Whelan On Sustainable Enterprise in the Private Sector

Tim Gunn

Fashion Icon, Former Co-Host & Mentor of "Project Runway"

Winona LaDuke

Executive Director of Honor the Earth