Mayim Bialik

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

Priyanka Chopra Jonas

Award-Winning Actress, Producer & Humanitarian

Priyanka Chopra Jonas Takes a Lie Detector Test | Vanity Fair

Cynthia Nixon

Actress Known for her Role as Miranda Hobbes on HBO's "Sex and the City"; Former Candidate for Governor of New York

Dan Abrams

Chief Legal Affairs Anchor at ABC News & Founder of Abrams Media

Malala Yousafzai

Youngest-Ever Nobel Prize Winner; Advocate for Girls' Education & Women's Equality; Author of the International Bestseller "I Am Malala"

Wilmer Valderrama

Actor, Producer, Activist & Television Personality

Alex Banayan

Author & World’s Youngest Venture Capitalist

Henry Winkler

Actor, Producer, Director & Best-Selling Author; Best Known for "Happy Days"

Judge Cristina Perez

Lawyer, Judge "Cristina’s Court," Community Activist

Michele Bachmann

Former Attorney & Congresswoman, Dean of Regent University's Robertson School of Government

Charlene Strong

Gay Rights Activist

John Lithgow

Actor, Musician, Author, Arts Advocate

Danai Gurira

Actress, Best Known for "Black Panther" & "The Walking Dead"

Katie Holmes

Award Winning Actress and Producer

Ziauddin Yousafzai

Co-Founder of the Malala Fund

Allen Gannett

Founder & CEO at TrackMaven

Jenna Bush-Hager

Best-selling Author; Contributing Correspondent, NBC's Today; Chair, UNICEF's Next Generation and Editor-at-Large, Southern Living Magazine

Superpower Sisterhood with Jenna Bush Hager and Barbara Pierce ...

Dr. Kate Biberdorf

Science Entertainer, Professor & Author Known as Kate the Chemist

Ntiedo Etuk

Founder and CEO DimensionU, Inc.

Greg Graffin

Lead Singer of Bad Religion & Professor of Biology at UCLA

Mike Brown, Ph.D.

Astronomer & Author of "How I Killed Pluto and Why It Had It Coming"