Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Van Jones

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

Hill Harper

Best-Selling Author, Tech Entrepreneur, Investor, Philanthropist & Actor; Best Known For "CSI: NY" & "The Good Doctor"

Mayim Bialik

Neuroscientist, Mental Health Advocate & Actress Known for "The Big Bang Theory"

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Tracee Ellis Ross

Actress, Producer; Chief Executive Officer at PATTERN

Daymond John

"Shark Tank" Investor; Founder & CEO of FUBU; Presidential Ambassador for Global Entrepreneurship

Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Ashley Judd

Actress, Activist & Humanitarian

Issa Rae

Actress, Writer, Director & Producer Known for HBO's "Insecure" & "Awkward Black Girl"

Ben Stein

Political Economist, Commentator, Author & Actor

Adrian Grenier

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

Peter Diamandis

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

Kal Penn

Actor, Writer, Producer & Former Associate Director of the White House Office of Public Engagement

Earvin “Magic” Johnson

Basketball Hall of Famer, Entrepreneur, Philanthropist & Motivational Speaker

Graham Hill

Founder of Life Edited & TreeHugger.com

Andy Cohen

Emmy Award-Winning Host & Producer of Bravo’s "Watch What Happens: Live"

Andy Cohen reacts to his infamous New Year’s Eve rant

Robert Ballard

Renowned Ocean Explorer & Scientist

Spike Lee

Academy Award-Winning Writer, Producer, Actor & Director; Best Known for "BlacKkKlansman" & "Malcolm X"

Ray Kurzweil

Chairman of Kurzweil Technologies, Inventor & Futurist; Author of "How to Create a Mind"

Mindy Kaling

Emmy-Nominated Writer, Producer, New York Times Best-Selling Author, Director & Actor

Mindy Kaling Would Love to Be in the Next "Charlie's Angels" with Drew

Richard Dreyfuss

Academy Award-Winning Actor

Matt Damon

Actor, Screenwriter & Producer; Co-Founder of Water.org; Expert Advocate on Global Water & Sanitation Crisis

Tiffany Shlain

Founder of The Webby Awards; Emmy-Nominated Filmmaker, Bestselling Author, Internet Pioneer & Futurist

Gabrielle Union

Actress, Voice Artist, Activist, Author & Investor

Doc Hendley

Global Humanitarian, Clean Water Crusader, Top 10 CNN Hero, Sustainability Advocate

Bill Maher

Political Satirist & Host of HBO's "Real Time"

Erin Gruwell

Founder & Executive Director of the Freedom Writers Foundation; Education Reform Advocate

LeVar Burton

Literacy Advocate & Actor Known for "Roots," "Star Trek" & "Reading Rainbow"

Alicia Silverstone

Actress & Animal Rights Activist