Don't believe me. I am a know nothing. But Stephen Hawking, he knows a thing or two. When he says there are eleven dimensions to the universe, trust him because he has done the maths. When he says there is no heaven (a twelfth dimension?), trust him because he has done the ... oh, well, never mind. But he is bound to be right. You can read it all here.
If I were the reporter here are two questions I would have asked him.
(1) On what basis does he believe that "should" statements are valid?
(2) Where do the tiny quantum fluctuations at the beginning of the universe come from?