Her Majesty Queen Rania Al Abdullah

Queen of the Hashemite Kingdom of Jordan

Gerry Adams

President of Sinn Féin

Sheikh Hamad bin Jassim bin Jabr Al-Thani

Prime Minister and Minister of Foreign Affairs of the State of Qatar

Kofi Annan

Former Secretary General of the United Nations

President of the Kofi Annan Foundation

Andrés Pastrana Arango

Former President of the Republic of Colombia

Michelle Bachelet

Former President of the Republic of Chile

UN Women Executive Director

Jean-Max Bellerive

Former Prime Minister of the Republic of Haiti

Tony Blair

Former Prime Minister of the United Kingdom

Michael Bloomberg

Mayor of the City of New York

Gordon Brown

Former Prime Minister of the United Kingdom of Great Britain and Northern Ireland

Gro Harlem Brundtland

Former Prime Minister of the Kingdom of Norway

George H.W. Bush

41st President of the United States of America

Laura Bush

Former First Lady of the United States

Felipe Calderón

President of Mexico

Jimmy Carter

39th President of the United States of America

Founder, The Carter Center

Helen Clark

Former Prime Minister of New Zealand

Administrator, United Nations Development Programme

Hillary Rodham Clinton

Secretary of State

U.S. Department of State

Recep Tayyip Erdoğan

Prime Minister of the Republic of Turkey

Leonel Fernández

President of the Dominican Republic

António Guterres

Former Prime Minister of the Portuguese Republic

United Nations High Commissioner for Refugees

Lawrence H. Summers

Former Director

National Economic Council

Tarja Halonen

President of the Republic of Finland

His Royal Highness Prince Salman bin Hamad Al-Khalifa

Crown Prince and Deputy Supreme Commander of the Kingdom of Bahrain

John Holdren

Director

White House Office of Science and Technology Policy

His Majesty King Juan Carlos I

Kingdom of Spain

His Serene Highness Prince Albert II

Sovereign Prince of the Principality of Monaco

Valerie B. Jarrett

Senior Adviser and Assistant to the President for Intergovermental Affairs and Public Engagement

Paul Kagame

President of the Republic of Rwanda

John Key

Prime Minister of New Zealand

Jakaya Kikwete

President of the United Republic of Tanzania

Ernest Bai Koroma

President of the Republic of Sierra Leone

Vivek Kundra

U.S. Chief Information Officer

Office of Management and Budget

Gary Locke

Secretary of Commerce

U.S. Secretary of Commerce

Bingu Wa Mutharika

President of the Republic of Malawi

Barack Obama

44th President of the United States of America

Michelle Obama

First Lady of the United States

José María Figueres Olsen

Former President of the Republic of Costa Rica

George A. Papandreou

Former Prime Minister of the Hellenic Republic

Shimon Peres

President of the State of Israel

Kamla Persad-Bissessar

Prime Minister of the Republic of Trinidad and Tobago

Mizengo K.P. Pinda

Prime Minister of the United Republic of Tanzania

Colin Powell

Former Secretary of State

U.S. Department of State

René Préval

Former President of the Republic of Haiti

José Ramos-Horta

President of the Democratic Republic of Timor-Leste

Fredrik Reinfeldt

Prime Minister of the Kingdom of Sweden

Richard Robinson

Chairman, President & CEO

Scholastic, Inc.

Mary Robinson

Former President of Ireland

President, Mary Robinson Foundation-Climate Justice

Kevin Rudd

Former Prime Minister of the Commonwealth of Australia

Minister of Foreign Affairs of the Commonwealth of Australia

Jorge Sampaio

Former President of the Portuguese Republic

United Nations Secretary General's Special Envoy to Stop Tuberculosis

Juan Manuel Santos

President of the Republic of Colombia

Rajiv Shah

Administrator

USAID

Ellen Johnson Sirleaf

President of the Republic of Liberia

Jens Stoltenberg

Prime Minister of the Kingdom of Norway

Jalal Talabani

State President of the Republic of Iraq

Nguyễn Minh Triết

President of the Socialist Republic of Vietnam

Danilo Türk

President of the Republic of Slovenia

Melanne Verveer

Ambassador-at-Large for Global Women's Issues

U.S. Department of State

Thomas Vilsack

Secretary of Agriculture, U.S. Department of Agriculture

Ernesto Zedillo

Former President of Mexico

Director, The Yale Center for the Study of Globalization

Andre Agassi

Founder

Andre Agassi Charitable Foundation

Muhammad Ali

Founder

Athletes for Hope

Christiane Amanpour

Anchor, This Week

ABC News

Lionel Barber

Editor

The Financial Times

Maria Bartiromo

Anchor

CNBC

Matthew Bishop

NY Bureau Chief & American Business Editor

The Economist

Bono

Lead Singer, U2

Co-Founder, Anti-Poverty Campaign ONE

Tom Brokaw

Special Correspondent

NBC News

Christy Turlington Burns

Founder

Every Mother Counts

Jim Carrey

Founder

Better U Foundation

Don Cheadle

Co-founder

Not on Our Watch

Anderson Cooper

Anchor

CNN

Katie Couric

Host

ABC

Matt Damon

Co-founder

Water.org

Geena Davis

Founder

The Geena Davis Institute

America Ferrera

Ambassador

Save the Children

Thomas Friedman

Columnist, Foreign Affairs

The New York Times

Maggie Gyllenhaal

Actress

Angelina Jolie

Co-chair

Jolie-Pitt Foundation

Quincy Jones

Founder

Quincy Jones Foundation

Donna Karan

Founder

Urban Zen Foundation

Alicia Keys

Co-founder

Keep a Child Alive

Nicholas Kristof

Columnist

The New York Times

Matt Lauer

Host

The Today Show, NBC

Lisa Ling

Correspondent

National Geographic Explorer

Ricky Martin

President

Ricky Martin Foundation

Julia Ormond

Founder & President

Alliance to Stop Slavery and End Trafficking

Brad Pitt

Founder

Make It Right

Usher Raymond

Chairman & Founder

Usher's New Look Foundation

Sanjay Gupta

Chief Medical Correspondent

CNN

Martin Scorsese

Founder, The Film Foundation

Chairman, World Cinema Foundation

Kevin Spacey

Artistic Director, The Old Vic Theater, London

Co-founder, Trigger Street Productions

Richard Stengel

Managing Editor

Time Magazine

George Stephanopoulos

Chief Washington Correspondent

ABC News

Ben Stiller

Founder

The Stiller Foundation

Barbra Streisand

President

The Streisand Foundation

Greta Van Susteren

Anchor & Host

Fox News Channel

Vijay Vaitheeswaran

Correspondent

The Economist

Judy Woodruff

Senior Correspondent

The NewsHour with Jim Lehrer, PBS

Fareed Zakaria

Host

CNN’s Fareed Zakaria GPS

Martti Ahtisaari

Former President of the Republic of Finland

Al Gore

Chairman

The Alliance for Climate Protection

Wangari Maathai

Founder & Chair

The Green Belt Movement, Kenya

Toni Morrison

Robert F. Goheen Professor in the Humanities

Princeton University

Amartya Sen

Thomas W. Lamont University Professor

Harvard University

Joseph Stiglitz

Professor

Columbia University

Desmond Tutu

Archbishop Emeritus of Cape Town

South Africa

Elie Wiesel

President

Elie Wiesel Foundation

Fazle Abed

Founder & Chairperson

BRAC

Madeleine K. Albright

Chair

Albright Stonebridge Group

Louise Arbour

President & CEO

International Crisis Group

Lance Armstrong

Founder & Chairman of the Board

Lance Armstrong Foundation

Eli Broad

Founder

The Broad Foundations

Geoffrey Canada

President & CEO

Harlem Children's Zone

Margaret Chan

Director-General

World Health Organization

Charles MacCormack

President & CEO

Save the Children

Valentino Achak Deng

Founder & Director

The Valentino Achak Deng Foundation

Bill Drayton

Founder and CEO

Ashoka: Innovators for the Public

Paul Farmer

Co-founder

Partners In Health

Julio Frenk

Dean, School of Public Health

Harvard University

William Frist

Schultz Professor of International Economic Policy

Princeton University

Bill Gates

Co-chair & Trustee

Bill and Melinda Gates Foundation

Melinda French Gates

Co-chair

Bill & Melinda Gates Foundation

Helene Gayle

President & CEO

CARE USA

Jeff Gordon

President

Jeff Gordon Foundation

Vartan Gregorian

President

Carnegie Corporation of New York

Laurene Powell Jobs

Founder & Board Chair

College Track

John Glenn

Chairman, Board of Advisors

John Glenn School of Public Affairs (Ohio State University)

John Sexton

President

New York University

Jonathan Reckford

Chief Executive Officer

Habitat for Humanity

Van Jones

Senior Policy Advisor, Green For All

Senior Fellow, Center for American Progress

Ashley Judd

Board Member & Global Ambassador

Population Services International

Ban Ki-moon

Secretary General of the United Nations

Ashton Kutcher

Co-founder

The Demi and Ashton Foundation

Demi Moore

Co-founder

The Demi and Ashton Foundation

Luis Alberto Moreno

President

Inter-American Development Bank

Amre Moussa

Secretary General of the League of Arab States

Rajendra K. Pachauri

Director-General

TERI, The Energy and Resources Institute

Surin Pitsuwan

Secretary-General of the Association of Southeast Asian Nations

John Podesta

President & CEO

Center for American Progress

Carl Pope

Chairman

Sierra Club

John R. Seffrin

Chief Executive Officer

American Cancer Society

Raymond Offenheiser

President

Oxfam America

Judith Rodin

President

The Rockefeller Foundation

Roger Ferguson

President & CEO

TIAA-CREF

Robert Rubin

Co-chair

Council on Foreign Relations

George Rupp

President & CEO

International Rescue Committee

Zainab Salbi

Founder and Former CEO

Women for Women International

Premal Shah

President

Kiva.org

Josette Sheeran

Executive Director

United Nations World Food Programme

Michel Sidibé

Executive Director

United Nations AIDS

Achim Steiner

Executive Director

United Nations Environment Programme (UNEP)

Mark R. Tercek

President & CEO

The Nature Conservancy

J. Craig Venter

Founder, Chairman & President

J. Craig Venter Institute

Tensie Whelan

Executive Director

Rainforest Alliance

Timothy Wirth

President

United Nations Foundation

Robert B. Zoellick

President

The World Bank Group