Dr. Jonathan Foley

World Leading Climate Scientist & Executive Director of Project Drawdown

Adam Bly

Ex-VP of Data at Spotify; Founder of Seed; Founder of an AI startup, Stealth

Slavoj Žižek

Philosopher & International Director of the Birkbeck Institute for the Humanities

Robin Wright

Foreign Policy Analyst, Journalist & Author of "Rock the Casbah: Rage and Rebellion across the Islamic World"

Shirin Ebadi

Nobel Peace Prize-Winning Iranian Activist & Lawyer

Mark Kramer

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

Mikko Hypponen

Computer Security Expert; Chief Research Officer at WithSecure & Principal Research Advisor at F-Secure

If It's Smart, It's Vulnerable

David Miliband

President & Chief Executive Officer of the International Rescue Committee; Former UK Foreign Secretary

Spencer Wells

Geneticist, Anthropologist, Author, Entrepreneur, Adjunct professor at the University of Texas at Austin

Richard Wolffe

Digital Executive, Best-Selling Author & Columnist at The Guardian

President's Speaker Series - YouTube

Tiffany Shlain

Founder of The Webby Awards; Emmy-Nominated Filmmaker, Bestselling Author, Internet Pioneer & Futurist

Raj Patel

Award-Winning Writer, Food Politics Activist, Filmmaker & Academic

Danny Glover

Acclaimed Actor, Producer & Leading Social Activist

Ralph Nader

Consumer Advocate, Lawyer & Author; Former Independent Presidential Candidate

Rita McGrath

Expert on Business Strategy in Uncertain Environments; Acclaimed Thinkers50 Thought Leader & Author

Laura Liswood

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

John P. Kotter

Leadership & Change Management Guru

Scott Aughenbaugh

Strategic Engagement Director at the National Security Innovation Network

An Phung

Multimedia Journalist

Patrick Byrne

Founder & CEO, Overstock.com

Bill Clinton

42nd President of the United States; Founder of the William J. Clinton Foundation

Ben Goldacre

Physician; Best-Selling Academic & Science Writer

John Zogby

Trendspotter & Leading Pollster

Calvin Trillin

Author, Columnist, Humorist & Political Satirist

General Wesley Clark

Retired Four-Star Army General & Former NATO Supreme Allied Commander

Tom Stewart

Editor, Harvard Business Review

Steven Mazie

Associate Professor of Political Studies, Bard High School Early College

Brian Hoffstein

Contributing Writer

Kenneth Roth

Executive Director at Human Rights Watch

Amy Gutmann

United States Ambassador to Germany; Former President of UPenn