Stephen Wolfram: Computing a theory of everything Stephen Wolfram, creator of Mathematica, talks about his quest to make all knowledge computational — able to be searched, processed and manipulated. His new search engine, Wolfram Alpha, has no lesser goal than to model and explain the physics underlying the universe.TEDTalks is a daily video podcast of the best talks and performances from

Time travel possible: Hawking

Renowned astrophysicist Stephen Hawking says people will one day be able to travel into the distant future. Hawking reportedly drops this knowledge in the new documentary, Into The Universe, set to air in Canada on Sunday, May 30 on the Discovery Channel.