Shiza Shahid

Entrepreneur, Technologist, Investor, Impact Leader & Co-Founder of the Malala Fund and Our Place

Peter Diamandis

Founder & Executive Chairman of the XPRIZE Foundation; Author; Named One of The World's 50 Greatest Leaders

Dom Sagolla

Co-Creator of Twitter; Author of "140 Characters"

Van Jones

CEO of REFORM Alliance, CNN host, Emmy Award-winning Producer & NY Times Best-Selling Author

The Messy Truth with Van Jones | Busta Rhymes Interview

Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Erin Brockovich spotlights a water crisis in a California town

America Ferrera

Award-Winning Actress, Producer & Humanitarian

Simon Sinek

World-Renowned Leadership Expert & Best-Selling Author

Yael Cohen Braun

Co-Founder & Board Chair of F*ck Cancer

Kathryn Bigelow

First Woman to Win an Academy Award for Best Director; Known for "Zero Dark Thirty" & "The Hurt Locker"

Irshad Manji

Founder of The Moral Courage Project, Author of "Allah, Liberty and Love" & "The Trouble with Islam Today: A Muslim's Call for Reform in Her Faith"

Lisa Ling

Award-Winning Journalist & Producer for CBS News

Erin Gruwell

Founder & Executive Director of the Freedom Writers Foundation; Education Reform Advocate

Antwone Fisher

Best-Selling Author, Screenwriter & Lecturer

Chris Sacca

Google & Twitter Innovation Guru

Bill Nye

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

Pearl Arredondo

Student Advocate, Education Reformer & Principal

Ben Stein

Political Economist, Commentator, Author & Actor

Marilyn Tam

Best-Selling Author, Consultant, Board Certified Executive/Corporate Coach, CEO of Marilyn Tam & Co., Founder & Executive Director of Us Foundation

Nolan Bushnell

Atari Founder, Silicon Valley Icon, Entrepreneur & Scientist Known as the "Father of the Video Game Industry"

David Agus

Co-Founder of Navigenics, Author of "The End of Illness," Professor of Medicine & Engineering at the University of Southern California