Peter Diamandis

Founder & Executive Chairman of the XPRIZE Foundation; Author; Named One of The World's 50 Greatest Leaders

Van Jones

CEO of REFORM Alliance, CNN host, Emmy Award-winning Producer & NY Times Best-Selling Author

Sophia Bush

Actress, Humanitarian & Author

Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist; UN Ambassador

Tim Sanders

Bestselling Author, Technology Pioneer, Expert on Collaboration & Relationships

Vikram Mansharamani

Academic Author, Advisor, Global Trend-Watcher & Lecturer at Harvard University

Robert Ballard

Renowned Ocean Explorer & Scientist

Alicia Silverstone

Actress & Animal Rights Activist

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Dan Buettner

National Geographic Writer, Renowned Explorer & Author of "Blue Zones"

Vivek Wadhwa

Entrepreneur, Emerging Technologies Expert, Academic & Celebrated Author

Travis Kalanick

Co-Founder & Former CEO of Uber; CEO of CloudKitchens

David Suzuki

Environmentalist & Scientist; Co-Founder of the David Suzuki Foundation

Amory Lovins

Co-Founder & Chairman Emeritus of Rocky Mountain Institute

Amy Myers Jaffe

Leading Expert on Global Energy Policy & Sustainability

Amy Myers Jaffe: TEDx Energy Policy

Nikki Reed

Actress, Singer-Songwriter & Model; Founder & CEO of Eco-Sustainable Fashion Brand Bayou With Love; Autism & Environmental Advocate

Daryl Hannah

Actress, Best Known for "Kill Bill" & "Splash"; Environmental Activist

Ralph Nader

Consumer Advocate, Lawyer & Author; Former Independent Presidential Candidate

Graham Hill

Founder of Life Edited & TreeHugger.com

Jon Gordon

10x Best-Selling Author & Leadership Expert