George Elvin

Green Innovation Speaker & Author

Anna Dietrich

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

Don McMillan

Comedian

Bernie Krause

Natural sounds legend; records the sounds of endangered biospheres.

Carlo Ratti

Architect & Engineer; Director of MIT's SENSEable City Lab; Founding Partner of Carlo Ratti Associati

Mikko Hypponen

Computer Security Expert & Chief Research Officer for F-Secure

James McLurkin

Roboticist, Inventor, Researcher & Teacher

James McLurkin and his robot swarm

Yves Rossy

Military-Trained Pilot & Aviation Enthusiast

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.

José M. Hernández

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

Catherine Mohr

Vice President of Strategy at Intuitive Surgical & President of the Intuitive Foundation; Medical Tech Start-Up Advisor

Alex Steffen

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

Rebecca MacKinnon

Founding Director of Ranking Digital Rights

Maria Bezaitis

Intel Fellow, Chief Architect of Socio-Technical Systems & Expert on Technology Innovation

Keller Rinaudo

Co-founder and CEO of Zipline

Jeffrey Kluger

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

Steven Squyres

Scientific Investigator, NASA

Leland Melvin

Engineer, Former NASA Astronaut & Former NFL Wide Receiver

NASA astronaut Leland Melvin teaches kids about Webb telescope ...

Ben Goldacre

Physician; Best-Selling Academic & Science Writer