*Update: Stephen Hawking does not appear in this video, read the article.
Prof Hawking said the £4.4bn machine, in which scientists are about to recreate conditions just after the Big Bang, is "vital if the human race is not to stultify and eventually die out."(via Skepchick)
And he sought to ease fears that the machine could have apocalyptic effects. "The world will not come to an end when the LHC turns on," Prof Hawking said, adding: "The LHC is absolutely safe."
Scientists at the CERN research centre in Switzerland are aiming to use the machine to gain a better understanding of the birth and structure of the universe, and to fill gaps in our knowledge of physics. Read more