Biz Stone

Co-Founder of Twitter

Jeremy Rifkin

Leading Global Technologist, Futurist, Authority on World Economic & Environmental Trends

Nastia Liukin

Olympic Gold Medal Gymnast

Mayim Bialik

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

Dan Ariely

Behavioral Economist; Professor at Duke University; Author; Founding Member of The Center for Advanced Hindsight

Maria Menounos

CEO & Co-founder of AfterBuzz TV; Former E! News Co-Anchor; Best-selling Author, Journalist & Type-1 Diabetic

Diana Nyad

World Champion Swimmer, Storyteller, Sports Journalist & Broadcaster

Gabrielle Bernstein

Founder of HerFuture.com & New-York Times Best-Selling Author

Gabrielle Union

Actress, Voice Artist, Activist, Author & Investor

John Mackey

Co-Founder & CEO, Whole Foods Market

Gloria Steinem

Feminist Writer, Activist & Organizer; Co-Founder of New York Magazine & Ms. Magazine

Hoda Kotb

Award-Winning Broadcast Journalist, Television Personality, Author & Co-Anchor of NBC News' TODAY

Laila Ali

Undefeated Four-Time World Champion Boxer & Lifestyle Expert; Heart Disease Awareness Advocate

Christy Turlington Burns

Model & Founder of Every Mother Counts; Anti-Smoking Activist

Richard Thaler

Professor of Behavioral Science and Economics at the University of Chicago; Author of "Misbehaving: The Making of Behavioral Economics"

Richard Thaler: 'We Are Incapable of Learning From the Past ...

Jesse Tyler Ferguson

Actor & LGBTQ Activist; Best-Known for “Modern Family”

Andrew Zimmern

Four-Time James Beard Award-Winning TV Personality, Chef, Writer & Teacher

Patrick Lencioni

Management Consultant, Founder & President of The Table Group

Overcoming the Five Dysfunctions of a Team

Michael J. Fox

Actor, Author and Advocate; Founder, The Michael J. Fox Foundation for Parkinson’s Research

Michael J. Fox on latest Parkinson's research and how he's ...

Joe Torre

Chief Baseball Officer for Major League Baseball; National Baseball Hall of Famer, 4-Time World Series Champion & 9-Time MLB All-Star