Forensic Psychiatrist; Captain, U.S. Army

Distinguished Fellow, Carnegie Mellon University, College of Engineering; Faculty Member, Singularity University

Co-Host and Executive Producer, "The Circus," Showtime; National Correspondent, CBS News; Contributing Editor, The Atlantic

Climate Economist, Columbia Business School

President, Prudential Retirement, Prudential Financial (Festival Underwriter)

Director, US Centers for Disease Control and Prevention; Administrator, Agency for Toxic Substances and Disease Registry

Executive Director, Cybersecurity and Infrastructure Security Agency

Vice President and Executive Director, Program on Philanthropy and Social Innovation, The Aspen Institute

Cellist, Afghanistan National Institute of Music

President, Ford Foundation

Senior Vice President, Global Affairs, Google (Festival Underwriter)

Artistic Director of Photography and New Media, Anderson Ranch Arts Center

Co-Founder, The Mattering Movement

Co-Founder, I AM ALS; Co-Founder and Co-Chair, Synapticure

Founder and President, Sojourners; Author, On God's Side

Robert and Renee Belfer Professor of International Relations, Harvard Kennedy School