Philip Zimbardo

Psychologist Known for the Notorious '1971 Stanford Prison Experiment;' Researcher of the Psychology of Heroism, Evilness and Time

Professor Richard Dawkins

Evolutionary Biologist & Best-Selling Author

Richard Dawkins & Lawrence Krauss ...

Ramona Pierson

Former Managing Director, Head of Product and Innovation at PwC

Randy Lewis

Founder of The Nogwog Disability Initiative, Former Senior VP for Supply Chain & Logistics at Walgreens & Author of "No Greatness Without Goodness"

Rehema Ellis

Chief Education Correspondent at NBC News

Shannon Miller

Olympic Gold Medalist, Health Advocate & Cancer Survivor

Shantanu Sinha

Director of Product Management at Google; Co-Founder and Former President of Khan Academy

Shawn Achor

Harvard Professor, Researcher, Positive Psychology Expert, Author of "The Happiness Advantage" & "Big Potential"

Shiza Shahid

Entrepreneur, Technologist, Investor, Impact Leader & Co-Founder of the Malala Fund and Our Place

Spike Lee

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

Stephen Lewis

Celebrated Humanitarian and Former UN Special Envoy for HIV/AIDS in Africa

Steve Wozniak

Co-Founder of Apple Computer, Inc.

Story Musgrave, M.D.

Retired NASA Astronaut; Physician & Professor at Art Center College of Design

Sugata Mitra

Professor of Educational Technology; Leading Expert on Global Education Around Peer to Peer

Tim Wise

Anti-Racist Essayist, Author & Educator; Expert on White Privilege & Advocate for Belonging

Tony Porter

Educator & Activist Internationally Recognized For His Effort To End Violence Against Women

Vilayanur Ramachandran

Neuroscientist; Director of the Center for Brain & Cognition, University of California, San Diego

Vince Papale

Former NFL Player & Inspiration for the Movie "Invincible"

Wendy Davis

Lawyer & Democratic Politician; Founder of Deeds Not Words