Aaron McGruder

Writer and Cartoonist; Known for "The Boondocks"

Abigail Garner

Founder of FamiliesLikeMine.com

Adam Levin

Nationally Recognized Cybersecurity, Privacy & Identity Theft Expert; Founder of CyberScout & Credit.com; Author of "Swiped"

Adewale Troutman, MD, MPH, MA, CPH

President, American Public Health Association (APHA); Director, Public Health Leadership & Practice at University of South Florida

Admiral Michael Mullen

Chairman, Joint Chiefs of Staff (2007-2011)

Ai-jen Poo

Co-founder of National Domestic Workers Alliance; Director of Caring Across Generations, Co-founder of Supermajority

Akbar Gbajabiamila

Inspirational Former NFL Player & Broadcaster; Host of American Ninja Warrior & Co-Host of The Talk

Alastair Campbell

Consultant; Strategist; Communicator; Campaigner; Best-Selling Author; Former Director of Strategy & Communications to Tony Blair

Alek Wek

Alek Wek, African Model who graced the cover of Elle MAgazine in November 1997

Alex Epstein

Founder, Center for Industrial Progress Author, Fossil Fuels Improve the Planet

Alfred Poor

Health Tech Futurist & Writer

Alfred Poor, The Health Tech Futurist

Ali Landry

Former Miss USA, Actress and Owner of Belle Parish Lifestyle Brand

Alison Sander

Director, Boston Consulting Group's Center for Sensing & Mining the Future

Allen Sinai, PhD

Chief Global Economist, Strategist, and President of Decision Economics, Inc.

Alvin Poussaint

Psychiatrist, Media Consultant & Author

Ambassador Munir Akram

Former Permanent Representative to the UN from Pakistan

Ameenah Gurib-Fakim

Professor, Managing Director at Cephyr, Chemist, Gardener, Photographer & Writer of Books on the Flora of the Tropics, Medicinal Plants

Amy Herdy

Documentary Producer, Investigative Journalist, Advocate for Ending Sexual Violence; Known for "The Hunting Ground"

Amy Lockwood

Deputy Director of Stanford's Center for Innovation in Global Health

Anastasia Goodstein

Award-Winning Blogger & Tween Marketing Expert

Andre Norman

Change Agent, Activist & Founder of Project Footprints

Andrea Koppel

Award-winning, Internationally Renowned Journalist

Andrew L. Shapiro

Founder and Partner Broadscale Group

Andrew Webber

President & CEO, NBCH

Angela Braly

Former President and CEO Wellpoint

Angela Glover Blackwell

Founder & Former CEO, PolicyLink

Angela Rose

Professional Speaker, Author, Humanitarian & Entrepreneur

Angélique Kidjo

UNICEF Goodwill Ambassador, Singer & Songwriter

Anita Dunn

Former Chief Communications Officer for Obama for America

Ann Shoket

Former Editor in Chief of Seventeen Magazine & Author of "The Big Life"