Abha Dawesar

Award-Winning Novelist, Artist, TED Speaker & Head of Institutional Marketing Strategy and Planning at Vanguard

Adam Brown

Founder of adMAGINATION; Executive Strategist at Salesforce.com; Former Dell Head of Interactive

Adam Ostrow

Chief Digital Officer, TEGNA

Alana Nichols

Paralympic Gold Medalist; Three-Time Gold Medalist in Alpine Skiing & Basketball

Alexa Meade

Mixed-Media Painter & Installation Artist

Alexa von Tobel

Founder & CEO of Learnvest.com; New York Times Bestseller Author of "Financially Fearless"

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Alexis Madrigal

Senior Editor at The Atlantic & Author of "Powering the Dream: The History and Promise of Green Technology"

Alvin Poussaint

Psychiatrist, Media Consultant & Author

Alyse Nelson

Co-founder, President & CEO Vital Voices Global Partnership

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"

Andres Barreto

Founder of Onswipe, Grooveshark and Socialatom Group

Andrew Revkin

Senior Fellow for Environmental Understanding at Pace University

Andrew Sullivan

Writer-at-large at New York; Former Editor-in-Chief of The New Republic Magazine & Political Blogger

Angela Benton

Founder of Streamlytics; Serial Entrepreneur; Business & Technology Expert

Angela Byron

Board of Directors for the Drupal Association

Anna Deavere Smith

Award-Winning Actress, Playwright & Social Commentator

Anne Mosle

Vice President of The Aspen Institute, Executive Director of Ascend at the Aspen Institute and Co-Chair of The Aspen Institute Forum on Women and Girls

Anne Mosle - Aspen Institute

Antonio Damasio

Director of the Brain Institute

Antonio Villaraigosa

41st Mayor of Los Angeles