Lee Bienstock

Media Lead, Google; Runner Up on NBC's "The Apprentice"

Lester Holt

Anchor of NBC's "Nightly News" & Managing Editor and Hosting Dateline NBC

Liz Cheney speaks one-on-one with Lester Holt: Exclusive

Chris Hedges

Foreign Correspondent & Author

Sara Horowitz

Founder & Executive Director of Freelancers Union

Cary Fowler

Biodiversity warrior Cary Fowler wants to save the world from agricultural collapse, one seed at a time.

Malcolm Hoenlein

Executive Vice Chairman Of The Conference Of Presidents Of Major American Jewish Organizations.

Jon Bowermaster

Writer about Adventure, the Environment, and Exotic Corners of the World

Juan Gonzalez

Award-Winning Investigative Reporter; New York Journalism Hall of Famer & Former President of the National Association of Hispanic Journalists

Cristina Bicchieri

S. J. Patterson Harvie Professor of Social Thought and Comparative Ethics at the University Of Pennsylvania

Christopher Hayes

Editor-at-Large of The Nation & host of "All In with Chris Hayes" on MSNBC

Jacquelyn Ottman

Green Marketing

Jan Schlichtmann

Environmental Lawyer & Author, Subject of the Film "A Civil Action"

Karl Zinsmeister

Editor-in-Chief of The American Enterprise, a national magazine of politics, business, and culture based in Washington, D.C.; Specializes in Philanthropy

Meredith Bagby

Meredith Bagby is a youth trend expert, teacher, and author of six published works which include We've Got Issues: A Young Adult Political Guide and The Annual Report of the USA -- a widely acclaimed book that analyzes the U.S. budget as though it were a

Wayne Angell

After retiring on January 18, 2002, as chief economist and senior managing director of Bear Stearns.

John Cronin

Resident Scholar in Environmental Studies and Author

Michele Mayes

Vice President, General Counsel and Secretary at The New York Public Library

Laurence Steinberg

Adolescence Expert, Age of Opportunity Author & Professor of Psychology at Temple University

Age Of Opportunity: Lessons from the New Science of Adolescence

Jamie Foster Brown

Former Publisher and Sole Owner of Sister 2 Sister Magazine & Celebrity News Personality on the Tom Joyner Morning Show.

Casper ter Kuile

Culture Consultant on Belonging & Becoming; Ministry Innovation Fellow at Harvard Divinity School; Co-Founder of the UK Youth Climate Coalition