I was watching a video on Dr. Michio Kaku's page regarding how M-theory was developed. Towards the end of the video, it was said that theoratically a universe could be created in a laboratory. This universe would not effect our universe it would simply bud off our universe, then expand to cosmic proportions. Here is a link to Dr. Kaku's page. The fourth video down (BBC: Parallel Universes) is the one I'm refering to. http://www.mkaku.org/books-tv-film/video.html So if M-theory is correct, and we do indeed live in a universe that exists in 11 dimensional space, which it shares with other universes. Then it is possible that there is life in these other universes. Now think about this, if physicists do eventually create a universe in a laboratory, maybe our universe was created by a physicist in a laboratory, in a parallel universe 15 billion years ago.