Stephen Hawking died on March 14, 2018. More Hawking videos: http://bit.ly/HawkingVideos This video features Professors Ed Copeland and Mike Merrifield being interviewed by Sean Riley. Visit our website at http://www.sixtysymbols.com/ We're on Facebook at http://www.facebook.com/sixtysymbols And Twitter at http://twitter.com/sixtysymbols This project features scientists from The University of Nottingham http://bit.ly/NottsPhysics Patreon: https://www.patreon.com/sixtysymbols Sixty Symbols videos by Brady Haran http://www.bradyharanblog.com Email list: http://eepurl.com/YdjL9