Forrest Sawyer

Award-Winning Broadcast Journalist

Franklin Graham

President & CEO of the Billy Graham Evangelistic Association, Christian Evangelist & Missionary

Ginger Zee

Chief Meteorologist for ABC News, Author & Mental Health Advocate

Chasing Helicity: Through the Storm (The Chasing Helicity Series) (Chasing Helicity Ser...

Graham Hill

Founder of Life Edited & TreeHugger.com

Grant Achatz

Award-Winning Chef, Restaurateur & Cancer Survivor

Gwendoline Christie

Actress Known for HBO's "Game of Thrones" and "Star Wars: Episode VII - The Force Awakens"

Hank Green

#1 New York Times Best-Selling Author & CEO of Complexly

Hazel O'Leary

Former Secretary of Energy

Henry Blodget

Co-Founder, CEO, and Editor in Chief of "Business Insider"

Heston Blumenthal

Chef; Expert on the Science of Cooking

Hiroshi Ishiguro

Director of Intelligent Robotics Laboratory at Osaka University

Ingrid Newkirk

President, PETA

Ira Flatow

NPR Science Correspondent, Host of "Science Friday;" Science Media Expert

Jacques Pépin

Master French Chef; Food Columnist; Cookbook Author Educator

James Barksdale

Former CEO of Netscape

James Watson

Molecular Biologist, Geneticist & Zoologist

James Woolsey

Former Director of the C.I.A.

Janette Sadik-Khan

Leading Voice on Urban Transportation Policy

Jason Latimer

The World Champion of Magic

Jeffrey Kluger

Journalist; Editor and Writer at TIME MAGAZINE. Author of 8 books, including APOLLO 13.