Pattie Sellers

Chair of Fortune's Most Powerful Women & Award-Winning Multimedia Journalist; Co-Founder & CEO at SellersEaston Media

Ben Goldacre

Physician; Best-Selling Academic & Science Writer

David Remnick

Editor, The New Yorker

Paul Rieckhoff

Founder and Executive Director of Iraq and Afghanistan Veterans of America (IAVA); Author, "Chasing Ghosts: Failures and Facades in Iraq"

Carolyn Jessop

Polygamist Survivor & Author of "Escape"

Blair Underwood

Award-Winning Actor & Producer

Andrew Sullivan

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

Carole Black

Former President & CEO, Liftime Entertainment

Jose Antonio Vargas

Journalist, Filmmaker & Immigration Activist

Jim Wallis

Theologian, Writer, Political Activist & Racial Justice Advocate

William Frist

Chair, The Nature Conservancy Global Board; Former U.S. Senate Majority Leader, Heart Transplant Surgeon; Founder of Founding Partner of Frist Cressey Ventures and Hope Through Healing Hands

Dr. William H. Frist - Acceptance Speech

Coleman Peterson

Former Executive Vice President, Wal-Mart. President/CEO of Hollis Enterprises, LLC

Josh Hamilton

Former Outfielder for the Texas Rangers; 5-Time MLB All-Star & Recovering Substance Abuser

Robert Kenner

Documentary Filmmaker; Known for "Food, Inc."

Dr. Pamela Peeke

Medicine & Health Commentator; Expert in Integrative and Preventive Medicine

Patricia Russell McCloud

Leading Business Motivator

Linda Hirshman

Supreme Court Lawyer, Renowned Expert on Social Change in America & Author

Alex Steffen

Author of "Carbon Zero: Imagining Cities That Can Save the Planet"

Mia Farrow

Acclaimed Actress & Humanitarian Activist

Helen Clark

Former Administrator of the United Nations Development Programme & Former Prime Minister of New Zealand

Margaret Wheatley

Co-Founder & President of The Berkana Institute; Bestselling Author, Organizational Consultant, & Community Worker

Colonel Mike Mullane

Career Astronaut & Author; Member of International Space Hall of Fame

Justin Hall-Tipping

The Energy Evangelist, Justin Hall-Tipping works on nano-energy startups -- mastering the electron to create power.

David Rothkopf

Former U.S. Under Secretary of Commerce and Former CEO & Editor of the Foreign Policy Group

Maria Conchita Alonso

Singer-Songwriter; Latin Actress; LGBT Rights Activist

Kyle Pruett

Authority on Child Development

Nancy Hogshead-Makar

CEO at Champion Women; Legal Advocate for Girls & Women in Sports; Three Time Olympic Gold Medalist

Ki Hong Lee

Actor Known for "Unbreakable Kimmy Schmidt" & "The Maze Runner"

Human Connection in "Little America": An Interview with Ki Hong Lee

Mark Kramer

Co-founder of FSG, Author & Co-Creator of Shared Value Concept

Philippe Cousteau

Explorer, Social Entrepreneur & Environmental Advocate; Grandson of Captain Jacques-Yves Cousteau