Bjorn Lomborg

Political Scientist & Author of "The Skeptical Environmentalist"

Mara Liasson

National Political Correspondent for NPR

Catherine Mohr

Vice President of Strategy at Intuitive Surgical & President of the Intuitive Foundation; Medical Tech Start-Up Advisor

Will Allen

Pioneer in the Urban Farming Movement, Author & Founder of Growing Power

Madeline Levine

Educator & Author of The Price of Privilege

Ingrid Newkirk

President, PETA

Bill Sinunu

Author & Keynote Speaker on Being a Multicultural "Citizen Of The World"

Khalil Gibran Muhammad

Professor of History, Race & Public Policy at Harvard Kennedy School; Author of "The Condemnation of Blackness"

Ronan Farrow

Investigative Reporter, Activist & Lawyer

Pattie Sellers

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

Angela Ruggiero

Four-Time Ice Hockey Olympic Medalist

Laura Liswood

Secretary General, Council of Women World Leaders; Senior Advisor, Goldman Sachs

Ben Goldacre

Physician; Best-Selling Academic & Science Writer

George Elvin

Green Innovation Speaker & Author

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"

Glenn Roberts

Wheat and Rice Farmer; Owner of Anson Mills

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

Christ in Crisis: Why We Need to Reclaim Jesus

Stephen King

Award-Winning Author of Contemporary Horror

Cate Blanchett

Academy Award-Winning Actress Known for "Elizabeth" & "The Aviator;" Ambassador for the Australian Conservation Foundation

Bernadette Vadurro

Award-Winning Business Woman, Professional Speaker and Author

Vandana Shiva

World-Renowned Environmental Leader

Jonathan Merritt

Award-Winning Faith & Culture Writer

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

Nicholas Christakis

Sol Goldman Family Professor of Social & Natural Science; Director of the Human Nature Lab; Co-Director of the Yale Institute for Network Science