Joy-Ann Reid

MSNBC Correspondent, Political Author & Host of "The ReidOut"

Raj Patel

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

Tim Tebow

ESPN College Football Analyst; Heisman Trophy Winner; Former Quarterback for NFL's Denver Broncos & Baseball Outfielder for the New York Mets

Juan Williams

New York Times Best-Selling Author, Fox News Political Analyst, Co-Host of "The Five" & Award-Winning Columnist

Nicholas Burns

Professor of the Practice of Diplomacy & International Politics, Harvard Kennedy School

John Zogby

Trendspotter & Leading Pollster

Ralph Nader

Consumer Advocate, Lawyer & Author; Former Independent Presidential Candidate

Marty Makary, M.D.

Healthcare Futurist, Johns Hopkins Surgeon & Professor of Public Health; New York Times Bestselling Author

Blind Spots: When Medicine Gets It Wrong, and What It Means for Our Health

Jacques Pépin

Master French Chef; Food Columnist; Cookbook Author Educator

Tonya Lewis Lee

Author, Producer, Filmmaker & Entrepreneur; Women's Health Activist

Calvin Trillin

Author, Columnist, Humorist & Political Satirist

Sherman Alexie

Poet, Short Story Writer, Novelist, and Performer

Andrew Cohen

Founder, EnlightenNext

Dr. Dean Ornish

Physician, Leading Researcher in Healthcare, Founder of the Preventive Medicine Research Institute & Bestselling Author

Everyday Cooking with Janet Fletcher, Jean-Marc Fullsack and Helen Roe

Dave deBronkart

Kidney Cancer Survivor & Patient Advocate Known as "e-Patient Dave"

Keller Rinaudo

Co-founder and CEO of Zipline

An Phung

Multimedia Journalist

Lynsey Addario

Award-Winning Photojournalist; Contributor for National Geographic & Time Magazine

Of Love & War

Tim O'Reilly

Founder & CEO of O'Reilly Media

Cody Adams

Managing Editor of The Floating University.