Former Governor of Pennsylvania; NBC News Political Analyst & Author
Former PA Gov. Ed Rendell on Sanders Candidacy
Founder and Executive Director of the Equal Justice Initiative, Bestselling Author of "Just Mercy"
Award-Winning Medical Journalist
Holly Atkinson, MD
Host of NOVA ScienceNow & Yahoo Tech Columnist
Activist; Storyteller from Sierra Leone; Author, "A Long Way Gone"
Little Family: A Novel
Pulitzer Prize-Winning Journalist; Co-author of Half the Sky; Humanitarian
Journalist & Media Expert; Founder of BuzzMachine.com
Jeff Jarvis, City University of New York