Philippe Cousteau

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

Maude Barlow

Activist, Author & Former UN Senior Advisor on Water

Marcus Lemonis

Serial Entrepreneur, Investor and Leadership Expert; Chairman and CEO of Camping World; Star of CNBC 'The Profit', 'Streets of Dreams' and HGTV's 'The Renovator'; Philanthropist and Founder of The Lemon-AID Foundation

Sergio Zyman

Former Coca-Cola CMO, Marketing Strategist, Author

Shaun Tomson

Former World Surfing Champion, Leadership Expert, Environmental Activist

Joel Makower

Founder of GreenBiz.com; Expert in Sustainable Business, Clean Technology & The Green Marketplace

Alex Steffen

Author of "Carbon Zero: Imagining Cities That Can Save the Planet"

Justin Hall-Tipping

The Energy Evangelist, Justin Hall-Tipping works on nano-energy startups -- mastering the electron to create power.

Mark Kramer

Co-founder of FSG, Author & Co-Creator of Shared Value Concept

Sarah O. Ladislaw

Former Managing Director at Rocky Mountain Institute (RMI)

Matthew C. Nisbet

Professor of Communication, American University

Yves Rossy

Military-Trained Pilot & Aviation Enthusiast

Hazel O'Leary

Former Secretary of Energy

Alex Thomopoulos

TV Food Personality, Private Chef, Comedian & Actress; Known for Gluten-Free Recipes

Celebrity Chef, Comedian, and Culinary Host: Alex

Heidi Cullen

Communications Director for Monterrey Bay Aquarium Research Institute; Climate Scientist

Carlo Ratti

Italian Architect & Engineer; Director of MIT's SENSEable City Lab; Founding Partner of Carlo Ratti Associati

Scott Aughenbaugh

Strategic Engagement Director at the National Security Innovation Network

Stephen Walt

Robert and Renee Belfer Professor of International Affairs at Harvard University

Jack Perkowski

China Business Expert, Former Wall Street Executive, ASIMCO Founder

Aneesh Chopra

President of CareJourney

Aneesh Chopra - Washington Post Live