Winnie Byanyima

Executive Director of UNAIDS and an Under-Secretary-General of the United Nations; Former Executive Director, Oxfam International

Meg Lowman

National Geographic Explorer & Arbornaut

Bill Nussey

Founder of the Freeing Energy Project; Partner at Tech Square Ventures & Engage

Sangu Delle

Entrepreneur, Author, Clean Water Activist, Soros Fellow & TEDGlobal Fellow

Chris Turner

Author, Sustainability & Global Cleantech Expert

Mark Tercek

Former President & CEO of The Nature Conservancy

John Passacantando

Former Executive Director of Greenpeace USA

Michael Liebreich

Chairman & CEO of Liebreich Associates

Daniel Esty

Hillhouse Professor of Environmental Law and Policy at Yale Law School, Corporate Environmental Strategy Expert & Co-Author of "Green to Gold"

Riddhima Yadav

Climate Strategist & Sustainability Business Leader

Melinda Briana Epler

Founder & CEO of Change Catalyst (now Empovia); Thought Leader on Diversity and Inclusion in Tech

Michele Wucker

Best-Selling Author of "The Gray Rhino", "Lockout", & "Why The Cocks Fight"

Dr. Julio Friedmann

Chief Scientist at Carbon Direct & Non-Resident Fellow at the Center on Global Energy Policy at Columbia University SIPA

Edna Odhiambo

Independent Climate Consultant

Pattie Gonia

Queer Environmentalist; Drag Queen Building Community for Queer People, Allies & the Planet

Mari Copeny

Youth Activist for Access to Clean Water; Known as "Little Miss Flint"

Daniel Glickman

Former U.S. Secretary of Agriculture; Former Congressman (D-KS); Senior Fellow at the Bipartisan Policy Center

Tom Rand

Entrepreneur, Venture Capitalist & Author

Ginger Zee

Chief Meteorologist for ABC News, Author & Mental Health Advocate

Chasing Helicity: Through the Storm (The Chasing Helicity Series) (Chasing Helicity Ser...

Liz Bonnin

Award-Winning Science Expert & Broadcaster; Known for "Blue Planet Live" and "Drowning in Plastic"