From Dr_JimGates https://twitter.com/Dr_JimGates on Twitter: At Caltech, I shared conversations with Stephen Hawking about our shared passion: science. I sat down with @BBCWorld's #Beyond100Days to talk about his incredible life and lasting legacy here: https://www.youtube.com/watch?v=rq9KFEYNCVk @ChristianFraser @KattyKayBBC