Colonel Mike Mullane

Career Astronaut & Author; Member of International Space Hall of Fame

Anna Dietrich

‎Entrepreneur; Consultant; Speaker; COO & Co-Founder of Terrafugia, Inc.

Rebecca MacKinnon

Founding Director of Ranking Digital Rights

Ben Goldacre

Physician; Best-Selling Academic & Science Writer

Mikko Hypponen

Computer Security Expert; Chief Research Officer at WithSecure & Principal Research Advisor at F-Secure

If It's Smart, It's Vulnerable

Alex Steffen

Author of "Carbon Zero: Imagining Cities That Can Save the Planet"

Yves Rossy

Military-Trained Pilot & Aviation Enthusiast

James Melton

Author, Pilot & Leadership Coach

Steven Squyres

Scientific Investigator, NASA

B. Gentry Lee

Chief Engineer for Solar System Exploration, Jet Propulsion Laboratory

Todd Kuiken

Biomedical Engineering Manager at the Rehabilitation Institute of Chicago

Justin Hall-Tipping

The Energy Evangelist, Justin Hall-Tipping works on nano-energy startups -- mastering the electron to create power.

Ellen Stofan

Under Secretary for Science & Research at the Smithsonian; Former Chief Scientist at NASA

José M. Hernández

Former NASA Astronaut, Engineer, Former Candidate for U.S. Congress & Author

June Scobee Rodgers

Author, Speaker, Educator; Widow of Challenger Space Shuttle Commander Dick Scobee

Kip Thorne

Nobel Prize Winning Theoretical Physicist & Author, "The Science of Interstellar"