LeVar Burton

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

Les Brown

Motivator, TV Personality & Best-Selling Author

LeBron James

Sports Icon, NBA Superstar, Philanthropist

Melinda French Gates

Co-Chair of the Bill & Melinda Gates Foundation

Melinda French Gates' Brief But Spectacular take on making birth ...

Fantasia Barrino

American Idol Winner Season 3; Author of "Life Is Not a Fairy Tale"

Kathy Ireland

CEO & Chief Lifestyle Designer of Kathy Ireland Worldwide; Supermodel & Health Advocate

Kathy Ireland - Anatomie interview

Cheryl Hines

Actress Known for HBO's "Curb Your Enthusiasm;" Heart Disease & Cerebral Palsy Spokeswoman

Josh Duhamel

Actor and Former Fashion Model; Known for "Safe Haven" and "Transformers"

Bill Gates

Co-Founder of Microsoft; Co-Chair of the Bill & Melinda Gates Foundation

Kris Alexander

Video Games Professor, Public Speaker & Online Education Specialist

Dr. Eli Joseph

Author, Freelance Writer, Faculty Instructor at Columbia University School of Professional Studies, NYU School of Professional Studies, and UCLA

Sanyin Siang

Executive Director of Duke University's Coach K Leadership & Ethics Center at its Fuqua School of Business & Author

Geoffrey Parker

Director of the Master of Engineering Management Program at Dartmouth College, Professor of Engineering & Author

Jim Kwik

Founder of Kwik Learning, Memory and Speed-Reading Expert, Social Entrepreneur

David Sinclair

Author, Professor of Genetics & Co-Director of the Paul F. Glenn Center for the Biology of Aging at Harvard Medical School

Daymond John

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

Laura Ingraham

Political Commentator, Television Host & Journalist

Nick Bostrom

Professor at Oxford University, Director of the Future of Humanity Institute & Strategic Artificial Intelligence Research Center

William Easterly

Professor of Economics at New York University; Co-Director, Development Research Institute

Joseph Coughlin

Founder & Director of AgeLab, Massachusetts Institute of Technology