"Boston Rob" Mariano

Reality Star of Survivor & Amazing Race

A.J. Jacobs

Best-Selling Author & "Human Guinea Pig"

The Year of Living Constitutionally: One Man's Humble Quest to Follow the Constitution'...

Aaron McGruder

Writer and Cartoonist; Known for "The Boondocks"

Aisha Tyler

Actress & Comedian

Alan Zweibel

Alan Zweibel's career began writing and creating characters for the most legendary comedians of a generation: Gilda Radner, John Belushi, Chevy Chase, Dan Akroyd.

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Alvin Poussaint

Psychiatrist, Media Consultant & Author

Amanda Seales

Poet, Spoken Word Artist & Media Personality Known for HBO's "Insecure;" Anti-Smoking Activist

Ambassador Munir Akram

Former Permanent Representative to the UN from Pakistan

America Ferrera

Award-Winning Actress, Producer & Humanitarian

Amy DuBois Barnett

Chief Content Officer, theGrio.com & EVP Digital, Entertainment Studios

Amy Goodman

Host & Executive Producer, Democracy Now!

Anderson Cooper

Journalist, TV Personality, Anchor of CNN's "Anderson Cooper 360°"

Andrea Mitchell

Host of MSNBC’s "Andrea Mitchell Reports" & Chief Foreign Affairs Correspondent for NBC News

Andrea Mitchell - Celebrating 15 years of "Andrea Mitchell Reports"

Andrea Pino & Annie Clark

Founders of End Rape on Campus

Annabelle Gurwitch

Actress & Humorist

Anne-Marie Slaughter

Foreign Policy Expert, Author & CEO of New America Foundation

Anousheh Ansari

CEO of X Prize Foundation & First Female Private Space Explorer

Anthony Rapp

Actor, Singer & Author of "Without You: A Memoir of Love, Loss, and the Musical Rent"

Antonia Juhasz

Leading Energy Analyst, Author & Investigative Journalist Specializing In Oil