Michael Shellenberger

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

Ric O'Barry

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

The Cove Wins Documentary Feature: 2010 Oscars

Michael Lombardi

Author & Environmentalist

Christiana Figueres

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

Naomi Oreskes

Geologist & Earth Science Historian

The Big Myth: How American Business Taught Us to Loathe Government and Love the Free Ma...

Steve Goreham

Engineer, Author & Authority on Environmental and Energy Issues

Michael Nichols

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

Jonathan Trent

Former Director of Offshore Membrane Enclosures for Growing Algae; Founder of UpCycle Systems

Celine Cousteau

Environmental Activist, Storyteller & Author

Joel Sartore

National Geographic Photographer & Author

Carl Pope

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

Barton Seaver

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

Reese Halter

Forest & Ocean Defender

Calvin Mackie

Inspirational Entrepreneur & Mentor

Rose George

Author, A Life Removed, The Big Necessity, Ninety Percent of Everything

John Passacantando

Former Executive Director of Greenpeace USA

Chad Pregracke

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

Mark Steyn

Author and Commentator, Leading Canadian Human Rights Activist

Barry C. Lynn

Business and political journalist, expert on global industrial systems, corporate organization, trade, energy, emerging technology, and the development of middle-income nations

Greg Asner

Globabl Ecologist & Conservative Director at ASU

Greg Asner on Global Monitoring of Carbon, Corals & Forests