Montel Williams

Emmy Award-Winning Talk Show Host; Best Known For "The Montel Williams Show;" Multiple Sclerosis Activist

Parag Khanna

The World's Leading Geo-Strategist; Author of Second World: How Emerging Powers Are Redefining Global Competition in the 21st Century

Sheryl WuDunn

Pulitzer Prize-Winning Journalist; Co-author of Half the Sky; Humanitarian

Richard Florida

Renowned Economist & Author of "The Rise of the Creative Class"

Joseph Stiglitz

American Economist; Professor at Columbia University; Nobel Memorial Prize in Economic Sciences 2001

Graham Hill

Founder of Life Edited & TreeHugger.com

Geoffrey Canada

Inner-City Youth & Education Advocate

Matthew Bishop

Managing director, Rockefeller Foundation and Former Senior Editor, The Economist

Linda Ellerbee

Award-Winning Journalist & Television Producer

Geoff Colvin

Senior Editor-at-Large, Fortune Magazine, and Author, "Talent is Overrated," "Humans Are Underrated"

Esther Dyson

Chairman and Founder of HICCup (Health Initiative Coordinating Council); Chairman of EDventure Holdings

Jon Steinberg

Founder and CEO of Cheddar; Former CEO of Daily Mail, Former President and COO of BuzzFeed

Dr. Michio Kaku

World-Renowned Theoretical Physicist

The Future of Humanity: Terraforming Mars, Interstellar Travel, Immortality, and Our De...

Joan Lunden

Award-Winning Journalist, Best-Selling Author and Health and Wellness Advocate

Ian Bremmer

President and Founder of Eurasia Group

Jordan Goldman

Named "One of the top young entrepreneurs in America" by Inc Magazine, The White House, Business Insider, PBS and more.

Amy Goodman

Host, Democracy Now!

Aimee Mullins

Athlete, Runway Model, Actress & Double Amputee

Clay Shirky

Expert on New Technology and Social Media, and How They Shape Culture; Professor and Distinguished Writer in Residence, NYU

Jacqueline Novogratz

Founder & CEO of Acumen Fund