Brittney Cooper

Feminist Scholar & Author of "Beyond Respectability: The Intellectual Thought of Race Women"

General Wesley Clark

Retired Four-Star Army General & Former NATO Supreme Allied Commander

Lisa Randall

Award-Winning Physicist & Author

Dark Matter and the Dinosaurs: The Astounding Interconnectedness of the Universe

Karen Armstrong

Founder of The Charter for Compassion

George Kohlrieser

Organizational, Clinical & Police Psychologist; Former Hostage Negotiator

Gerry Adams

President, Sinn Fein

Shashi Tharoor

Diplomat & Author; Former United Nations Under-Secretary-General

Seth R. Bordenstein

Scientist, Educator, Founder & Professor in Microbiome and Virome Sciences

The One Health Microbiome Center at Penn State (Introduction)

Martha Nussbaum

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

Amy Goodman

Host & Executive Producer, Democracy Now!

Alan Weisman

Journalist / Author

John Harbison

Composer; Institute Prof. of Music, MIT

Jacques Pépin

Master French Chef; Food Columnist; Cookbook Author Educator

Eric Greitens

Missouri Governor; Former Navy SEAL and Founder of The Mission Continues; Best-Selling Author of "Strength and Compassion and The Heart and the Fist"

Joel Klein

Lawyer, Author & Former Chancellor of the New York City Department of Education

Neelam Deo

Diplomat; Former Consul General of India

Matthew Modine

Actor / Activist

Anna Deavere Smith

Award-Winning Actress, Playwright & Social Commentator

Kurt Andersen

Host of "Studio 360 from PRI and WNYC" & Author

Lee Hamilton

Member, President's Homeland Security Advisory Council; Director, Center on Congress, Indiana University