Sally Kohn

Founder and CEO of Movement Vision Lab; Liberal Political Columnist, Commentator & Community Organizer

G. Terry Madonna

Director of the Center for Politics and Public Affairs, Professor of Public Affairs, and Director of the Franklin and Marshall College Poll

Paul Pierson

John Gross Professor of Political Science at the University of California at Berkeley

Wendy Davis

Lawyer & Democratic Politician; Founder of Deeds Not Words

John Tomasi

Professor of Political Science & Philosophy at Brown University

Higher Education at Its Best: A Conversation with John Tomasi

A.C. Grayling

Best-Selling Author & Leading Commentator on Education, Philosophy, Corporate Ethics and Biomedicine

France A. Cordova

Director of National Science Foundation

Dr. Phil Plait

Blogger for Discover Magazine at Bad Astronomy, where he deconstructs misconceptions and explores the wonder of the Universe.

Katharine Hayhoe

Atmospheric Scientist, Professor of Political Science & Director of Climate Science Center at Texas Tech, Lead Scientist with The Nature Conservancy

Saving Us: A Climate Scientist's Case for Hope and Healing in a Divided World

Ray Mabus

Former U.S. Secretary of the Navy; Former Governor of Mississippi

Martha Nussbaum

Ernst Freund Distinguished Service Professor of Law and Ethics, University of Chicago

Michael Stevens

YouTube Sensation; Best Known as Vsauce