Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Ray Kurzweil

Chairman of Kurzweil Technologies; Inventor; Futurist

Ray Kurzweil: Future of Intelligence | MIT 6.S099: Artificial General ...

Steve Wozniak

Co-Founder of Apple Computer, Inc.

CeBIT Global Conferences - Keynote Steve Wozniak

Giuliana Rancic

Entertainment Journalist & Breast Cancer Survivor

Giuliana Rancic and Bill Are Open to Re-Trying IVF to Grow Family ...

Bill Nye

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

Ben Stein

Political Economist, Commentator, Author & Actor

Nev Schulman

Producer, Actor, Photographer & TV Host Known for MTV's "Catfish: The TV Show"

John Legend

EGOT Winning Musician, Producer & Philantropist

Ashley Judd

Actress, Activist & Humanitarian

Ashley Judd: Women, we are in the fight of our lives

Amy Purdy

Former "Dancing with the Stars" Contestant & Paralympic Professional Snowboarder

Paralympian Amy Purdy Eyes The Future Of Adaptive Action Sports

Spike Lee

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

Spike Lee to Receive American Cinematheque Award

Sophia Amoruso

Founder & Former CEO of Nasty Gal; New York Times Best-Selling Author of "#GIRLBOSS"

Viola Davis

Academy Award-Winning Actor, Producer & Philanthropist

Viola Davis Opens Up About Surviving Childhood Poverty, Her ...

Sherry Lansing

Former CEO of Paramount Pictures & Founder of The Sherry Lansing Foundation

Robin Roberts

Award-Winning Co-Anchor on ABC's "Good Morning America;" Breast Cancer & MDS Survivor

Ian Somerhalder

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

Carla Hall

Celebrity Chef & Former Co-Host of "The Chew"

Carla Hall Talks About Her Arrest

Andy Cohen

Host & Producer of Bravo’s "Watch What Happens: Live;" Former EVP of Development & Talent at Bravo

Nancy Snyderman, MD

Former Chief Medical Editor of NBC News

Jim Rogers

Investment Expert & Author of "Street Smarts: Adventures on the Road and in the Markets"

Where Money Is Hiding in the Market | Q&A with Jim Rogers ...

Iyanla Vanzant

Host & Executive Producer of "Iyanla Fix My Life"; #1 New York Times Bestselling Author & Spiritual Life Coach

Mitt Romney

Former Governor of Massachusetts, 2012 Republican Presidential Nominee and CEO

Mitt Romney and Lanhee Chen - Aspen Ideas Festival

Blythe Danner

Emmy Award-Winning Actress & Activist

Kal Penn

Actor, Writer, Producer & Former Associate Director of the White House Office of Public Engagement

Walter Robb

Former CEO, Whole Foods Market

Marcus Samuelsson

James Beard Award-Winning Chef & Owner of the Red Rooster Restaurant

David McCullough

Historian and Bestselling Author

Mario Lopez

Actor & Entertainment Journalist

Melissa Rivers

Actress, Television Host & Producer, Equestrienne, and Philanthropist; Daughter of Late Comedian Joan Rivers

Tim Gunn

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