Jimmy Carter

Former United States President (1977-1981), Author

Josh Lieb

Executive Producer, "The Daily Show"

Gillian Caldwell

CEO of Global Witness

Ingrid Newkirk

President, PETA

Francis Tapon

Author, Harvard MBA, and World Traveler

Raj Patel

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

Peter Guber

Executive, Entrepreneur & NYT Bestselling Author; Operating Owner of the 3-Time NBA Champion Golden State Warriors

John Legend

EGOT Winning Musician, Producer & Philantropist

Andrew Cohen

Founder, EnlightenNext

Jeremy Rifkin

Leading Global Technologist, Futurist, Authority on World Economic & Environmental Trends

Jacques Pépin

Master French Chef; Food Columnist; Cookbook Author Educator

Matt Miller

Fortune Columnist, Author & Radio Host

Gary Hamel

Internationally Renowned Expert on Business Strategy, Professor at London Business School & Author

Aubrey de Grey

Biomedical Gerontologist; Chief Science Officer of SENS Research Foundation; Researcher on Preventing Aging

Geoff Colvin

Senior Editor-at-Large at Fortune & Bestselling Author

James Canton

Futurist, Author & Visionary Business Advisor

Machines That Think: The Good, Bad and Scary of A.I. | Dr. James Canton

Marina Adshade

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

Steven Mazie

Associate Professor of Political Studies, Bard High School Early College

Gerry Adams

President, Sinn Fein

Sebastian Copeland

Adventurer, Environmental Activist, Award-Winning Photographer, Author, Lecturer & Founder of the Sedna Foundation

Peter Rojas

Co-founder of Gizmodo and of Engadget

Dean Kamen

Founder of FIRST; President of DEKA Research & Development Corporation

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist

Charles Best

Founder and Former CEO, DonorsChoose.org

From Classroom To Crowdfunding

Tom Freston

Principal, Firefly3; Former CEO, Viacom Inc.

Alison Gopnik

Professor & World Leader in Children's Learning and Development

Rebecca MacKinnon

Founding Director of Ranking Digital Rights

Jeff Jarvis

Leader in the Development of Online News & Blogging; Director of the Tow-Knight Center for Entrepreneurial Journalism at CUNY

Reihan Salam

President of the Manhattan Group for Policy Research; Former Executive Editor of National Review

Mitt Romney

Former Governor of Massachusetts, 2012 Republican Presidential Nominee and CEO