Tim Gunn

Fashion Icon, Former Co-Host & Mentor of "Project Runway"

Hilary Swank

Academy Award-Winning Actress; Best known for her roles in 'Million Dollar Baby' and 'Boys Don't Cry'

Ian Somerhalder

Actor Known for "The Vampire Diaries"; Animal & Environmental Advocate; Founder of The Ian Somerhalder Foundation

Bill Nye

"The Science Guy"; Science Communicator, TV Presenter & Mechanical Engineer; Climate Change Activist

Darren McGrady

Former Chef to British Royalty

Kyle Maynard

Inspirational Athlete, Author, Entrepreneur & Two-time ESPY Award Winner

Aasif Mandvi

Comedic Actor & Former Correspondent for "The Daily Show"

Julianne Malveaux

Economist, Author & Political Commentator; President Emerita of Bennett College for Women

Joan Lunden

Award-Winning Journalist, Best-Selling Author, Health & Wellness Advocate

Frank Luntz

Political Pollster & Communication Expert

Geralyn Lucas

Breast Cancer Survivor & Author of "Why I Wore Lipstick: To My Mastectomy"

Amory Lovins

Co-Founder & Chairman Emeritus of Rocky Mountain Institute

Greg Louganis

4x Olympic Gold Medal Diver; LGBTQ Activist & Author

Beau Lotto

Neuroscientist, Entrepreneur & Author of "Deviate"

The Neuroscience of Creativity, Perception, and Confirmation Bias

Mario Lopez

Actor & Entertainment Journalist

Barbara Lippert

MediaPost Editor-At-Large; Expert on Advertising, Marketing and Women's Issues

Doug Lipp

Former Head of Training at Walt Disney University & Bestselling Author; International Keynote Speaker

Lisa Ling

Award-Winning Journalist & Producer for CBS News

Steven Levitt

Economist, NY Times Bestselling Author of "Freakonomics," "SuperFreakonomics" & "Think Like a Freak"

Lisa Leslie

WNBA Champion, Olympic Gold Medalist & Author of "Don't Let the Lipstick Fool You;" Coach of Ice-Cube's BIG3 Basketball League

Spike Lee

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

Winona LaDuke

Executive Director of Honor the Earth

Ray Kurzweil

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

Daniel Kraft, M.D.

Physician-Scientist; Founder of Exponential Medicine; Chair for Medicine & Neuroscience at Singularity University

Dr. Bernice King

Minister, Attorney, Author & Daughter of Dr. Martin Luther King Jr.

Katty Kay

Award-Winning Journalist & Anchor; Best-Selling Author

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Ashley Judd

Actress, Activist & Humanitarian

Debbie Allen

Creative Marketing Expert & Business Speaker

David Agus

Co-Founder of Navigenics, Author of "The End of Illness" & Host of "The Checkup with Dr. David Agus"; Professor of Medicine & Engineering at the University of Southern California

The Book of Animal Secrets