Lawrence Krauss

Theoretical Physicist, Author & Professor

Alfie Kohn

Author & Speaker on Human Behavior, Education, & Parenting; Outspoken Critic of Education's Fixation on Grades

Jeffrey Israel

Author & Jewish Studies Professor at Williams College

Mark Zandi

Chief Economist of Moody's Analytics; Co-Founder of Economy.com

Nadine Strossen

Professor of Law; President, American Civil Liberties Union (1991-2008)

Marina Adshade

Author of "Dollars and Sex: How Economics Influences Sex and Love"

Virginia Postrel

Author & Columnist; Writes on The Intersection of Commerce & Culture

Tristram Stuart

Environmental Campaigner, Author & Businessman

Maude Barlow

Activist, Author & Former UN Senior Advisor on Water

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

Viktor Mayer-Schönberger

Co-Author of “Big Data" and "Delete;" Expert on the Networked Economy

Rachel Haot

Former Executive Director of Transit Innovation Partnership & Chief Digital Officer for the City of New York

Jesse Schell

Game Designer, CEO of Schell Games & Author of "The Art of Game Design"

Calvin Trillin

Author, Columnist, Humorist & Political Satirist

Lisa Witter

Partner and Chief Change Officer, Fenton

Interview Lisa Witter (English)

Steve Rubel

Chief Media Ecologist for Edelman and a Professional Blogger

Tim O'Brien

Pulitzer Prize Winning Novelist for "The Things They Carried"

Tod Machover

Tod Machover is head of the MIT Media Lab's Hyperinstruments/Opera of the Future group.

Neil Giuliano

Gay Rights Activist & President and CEO of Greater Pheonix Leadership