Ken Goddard

Director of the National Fish & Wildlife Forensics Laboratory, NY Times Best-Selling Fiction Author

Kelsey Skaggs

Co-Founder of the Climate Defense Project

Cristina Mittermeier

Photographer, Adventurer & Co-Founder of SeaLegacy

Dr. Biruté Mary Galdikas

Award-Winning Conservationist, Author & Founder of the Orangutan Foundation International

Xiuhtezcatl Martinez

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

Sheila Watt-Cloutier

Environmental, Cultural & Human Rights Advocate, Former Canadian President of the Inuit Circumpolar Council

Dr. Jill Stein

Physician, Environmental Activist & Politician; 2016 Green Party Presidential Nominee

Dr. Katy Nelson

Animal Health Expert, Host & Executive Producer of "The Pet Show with Dr. Katy"

Kartik Chandran

Environmental Engineer & Professor at Columbia University

Tony Juniper

Writer, Sustainability Advisor, & Environmentalist

Erin Schrode

Expert Advocate for Health, Sustainability & Environmental Education; Named "America's Green Girl" by OK Magazine

Nick Wobbrock

Co-Founder of Blue Forest Conservation

Ric O'Barry

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

Joel K. Bourne Jr.

Author, Award-Winning Journalist & Consultant for Documentary Films & TV

Ramez Naam

Computer Scientist, Science Fiction Author & Co-Chair of Energy & Environment at Singularity University

Ramez Naam - Exponential Innovation | SingularityU Thailand Summit

Tristram Stuart

Environmental Campaigner, Author & Businessman

Katie Cleary

Actress and Model; Founder of Peace 4 Animals and World Animal News

Will Allen

Pioneer in the Urban Farming Movement, Author & Founder of Growing Power

Sophia Bush

Actress, Humanitarian & Author

Bruce Usher

Columbia Business School Professor; Former CEO of EcoSecurities Group

Dennis Dimick

Former Executive Environment Editor at National Geographic Magazine

Daniel Pauly

Daniel Pauly is the principal investigator at the Sea Around Us Project, which studies the impact of the world's fisheries on marine ecosystems. The software he's helped develop is used around the world to model and track the ocean.

Jackson Galaxy

Host, "My Cat from Hell" & Author, "Cat Daddy: What the World's Most Incorrigible Cat Taught Me About Life, Love, and Coming Clean"

Nalini Nadkarni

Ecologist, Director of STEM Ambassador Program & Leading Expert in Canopy Research

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

Barton Seaver

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

Kate Orff

Sustainable Landscape Architect; Founder of SCAPE

Ron Pernick

Co-Founder & Managing Director of Clean Edge, Inc.

Vandana Shiva

World-Renowned Environmental Leader

Philippe Cousteau

Explorer, Social Entrepreneur & Environmental Advocate; Grandson of Captain Jacques-Yves Cousteau