Carl Pope

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

Monica Pedersen

Designer; Host on HGTV's "Designed To Sell" & "Bang For Your Buck"

Naomi Oreskes

Geologist & Earth Science Historian

Harvey Wasserman

Journalist, Author, Democracy Activist & Advocate for Renewable Energy

Carl Safina

Ecologist & Writer

Mark Tercek

Former President & CEO of The Nature Conservancy

Michael Lombardi

Diving Scientist, Technologist & Environmentalist

Jae Rhim Lee

Artist and TED Fellow Jae Rhim Lee Re-Imagines the Relationships Between the Body and the World

Britta Riley

Founder of Windowfarms.org

Chad Pregracke

Founder of Living Lands & Waters, CNN's Hero of the Year for 2013, Environmental Speaker & Bestselling Author

Ron Sims

Former Deputy Secretary for the US Department of Housing and Urban Development

Sy Montgomery

Naturalist, Adventurer & Author of "The Good Good Pig" & "The Soul of an Octopus"

Secrets of the Octopus

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

Andrew Hoffman

Holcim (US) Professor of Sustainable Enterprise at the University of Michigan