Bob Harper

Personal Trainer & Former Host of "The Biggest Loser;" Heart Attack Survivor

Maintaining A Healthy Body & Mind | Bob Harper Q&A

Bruce Bueno de Mesquita

Political Scientist, Professor at New York University & Senior Fellow at Stanford University's Hoover Institution

Peter Orszag

Economist, Vice Chairman of Corporate and Investment Banking at Citigroup, Inc. & Former Director of the Office of Management and Budget in the Obama Administration

Marvin Kalb

Marvin Kalb is a Senior Fellow at the Shorenstein Center for the Press, Politics and Public Policy

Jason Chua

Executive Director of Advanced Projects at United Technologies Corporation

Danielle Citron

Law Professor & Author of "Hate Crimes in Cyberspace"

Michael Sheldrick

Co-Founder, Global Citizen; Author of “From Ideas to Impact: A Playbook for Influencing and Implementing Change in a Divided World”

Paola Ramos

Host & Correspondent for VICE News; Contributor to Telemundo News & MSNBC; Hauser Fellow at Harvard Kennedy School.

Judge Victoria Pratt

Former Chief Judge, Newark, NJ Criminal Justice Reform Activist; Executive Director of Odyssey Impact & Author of "The Power of Dignity"

Meet the judge who assigns essays in court

Jason Bordoff

Founding Director, Center on Global Energy Policy, Columbia University

Sara Goldrick-Rab

Professor of Higher Education Policy and Sociology at Temple University, and Founder of the Wisconsin HOPE Lab

Audrey Gelman

Co-Founder of The Wing

F. Michael Higginbotham

Renowned Law Professor, Author and International Political Consultant; Civil Rights, Human Rights, and Constitutional Legal Expert

Samantha Vinograd

CNN National Security Analyst; Senior Advisor at the Biden Institute

Phillip Atiba Goff

Franklin A. Thomas Professor in Policing Equity at John Jay College of Criminal Justice, Co-Founder & President of Center for Policing Equity

Anindya Ghose

Foremost Authority on the Mobile Economy; Digital Marketing & Big Data Expert; NYU Stern School of Business Professor

Joseph Califano, Jr.

President and Chairman of The National Center on Addiction and Substance Abuse