Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Baratunde Thurston

Futurist Comedian, Writer & Cultural Critic

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Biz Stone

Co-Founder of Twitter

Lisa Ling

Award-Winning Journalist & Producer for CBS News

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

Chris Sacca

Google & Twitter Innovation Guru

Bill Nye

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

Richard Florida

Leading Urbanist, Economist & Author of "The Rise of the Creative Class"

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Reshma Saujani

Lawyer, Politician, Founder of Girls Who Code & Marshall Plan for Moms

Dominique Dawes

Three-time Olympian, Olympic Gold Medalist, Healthy Lifestyle Advocate and Gymnastics Academy Owner

Ben Stein

Political Economist, Commentator, Author & Actor

Nev Schulman

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

Ian Bremmer

President of Eurasia Group and GZERO Media; Political Scientist, Author, Entrepreneur & Lecturer

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Montel Williams

Emmy Award-Winning Talk Show Host; Multiple Sclerosis Survivor; Health Equity & Veteran Advocate

B.J. Novak

Actor, Writer & Comedian Known for "The Office"

Sophia Bush

Actress, Humanitarian & Author

Nastia Liukin

Olympic Gold Medal Gymnast

Bethenny Frankel

Entrepreneur, Reality TV Star & Bestselling Author; Founder of Skinnygirl & BStrong Disaster Relief

Mayim Bialik

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

Ashley Judd

Actress, Activist & Humanitarian