Heidi Cullen

Chief Climatologist for Climate Central

Xiuhtezcatl Martinez

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

Xiuhtezcatl Martinez - That Is What I Am Fighting For | Bioneers 2016

Mark Tercek

President and CEO, The Nature Conservancy

Rick Ridgeway

Environmentalist, Mountaineer, Expedition Author & VP of Environmental Initiatives and Special Projects at Patagonia

The Last Step: The American Ascent of K2 (Legends and Lore)

Ed Begley Jr.

Actor & Environmental Activist

'Bless This Mess': Ed Begley Jr. To Star In Fox Comedy Pilot | Deadline

Jeff Orlowski

Filmmaker, Photographer, Entrepreneur; Best Known for the Award-Winning Documentary, "Chasing Ice"

Ron Sims

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

Amin Toufani

Director of Strategy at Singularity University

AminToufani | Exponential Transportation | SU Global Summit 2018

Sallie Krawcheck

Founder & CEO of Ellevest, Named among the top ten of Fast Company's "100 Most Creative People” in the business list, as well as one of Entrepreneur Magazine’s "Entrepreneurs to Watch"

Peter Calthorpe

Architect, Urban Designer & Urban Planner; Author of "Urbanism in the Age of Climate Change"

Cameron Sinclair

World-Class Visionary; Co-Founder of Architecture for Humanity

Dan Phillips

American Designer and Builder; Founder of The Phoenix Commotion

Graham Hill

Founder of Life Edited & TreeHugger.com

Matthew Kahn

Professor of Economics, UCLA Institute of the Environment

Marc Abrahams

Editor and Co-Founder of the Science Humor Magazine Annals of Improbable Research (AIR); Creator of the Ig Nobel Prizes

David Crane

Strategic Advisor Executive at Pegasus Capital Advisors, Former President & CEO NRG Energy, Inc.

GreenBiz Highlights: David Crane in conversation with Marc Gunther

Raj Patel

Award-Winning Writer, Activist & Academic

John Francis

John Francis walks the Earth, carrying a message of careful, truly sustainable development and respect for our planet.

Carol Browner

Senior Counselor of Albright Stonebridge Group, a Global Strategy Firm

Danny Kennedy

Danny Kennedy– a passionate activist, successful cleantech entrepreneur, noted author and recognized opinion leader on global environmental issues.