Lou Waters

Aging Expert, Journalist & Former CNN Media Personality; Anchor of "Coming of Age"

Where Are They Now: Lou Waters

William Binney

Former NSA Crypto-Mathematician; Whistleblower

Lamman Rucker

Actor, Education Activist, Green Living Advocate & Entrepreneur

Dr. Max Rogers

Former Fighter Pilot, Healthcare Consultant

Sandra Fluke

Lawyer, Social Justice Advocate, Women's Health Expert

Charles Limb

Associate Professor of Otolaryngology-Head and Neck Surgery

Amy Waldman

Journalist, Author, "The Submission"

Barbara Bradley Hagerty

Religion Correspondent for NPR Who Reports on the Intersection of Faith and Politics, Law, Science and Culture

Stuart Firestein

Scientist; Advocate for the Public Understanding of Science

Todd Purdum

Senior writer at POLITICO and a contributing editor at Vanity Fair

Rishi Manchanda

Physician, Public Health Innovator, President & CEO of HealthBegins

Wendy Davis

Lawyer & Democratic Politician; Founder of Deeds Not Words

Andrew Fastow

Former CFO of Enron & Expert on Financial Ethics

Anna Escobedo Cabral

Former Treasurer of the United States, Partner at The Cabral Group & Jesse Ball duPont Fund Trustee

Jack Andraka

Machine Learning Engineer at Stanford Vision and Learning, Cancer Researcher & National Geographic Emerging Explorer

Dr. Carl Hart

Professor of Psychology & Chair of Department of Psychology at Columbia University

Vilayanur Ramachandran

Neuroscientist; Director of the Center for Brain & Cognition, University of California, San Diego

Spencer West

Inspirational Adventurist; Social Activist; Expert on Overcoming Stereotyping & Bullying

Spencer West

Dr. Jeffrey Bauer

Health Futurist, Author & Medical Economist

Terry Savage

Personal Finance Expert, Investment Advisor, Syndicated Columnist & Bestselling Author