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

Lisa Oz

Best-Selling Author, Producer, Host & Entrepreneur

Diana Nyad

World Champion Swimmer, Storyteller, Sports Journalist & Broadcaster

Gabrielle Bernstein

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

Mike Walsh

CEO of Tomorrow, Futurist & Best-Selling Author of "The Algorithmic Leader"

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 ...

Amanda Seales

Poet, Spoken Word Artist & Media Personality Known for HBO's "Insecure;" Anti-Smoking Activist

Patrick Lencioni

Management Consultant, Founder & President of The Table Group

Overcoming the Five Dysfunctions of a Team

Joe Torre

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

Rosie Perez

Actress, Choreographer, Activist & Former Co-Host of "The View"

Jeff Taylor

Founder of Monster.com & Eons.com