I'm enjoying Brian Greene's new book Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos on my Kindle. You can see an interview with professor Greene on The Science Network discussing various aspects of the many multiverse theories described in his book. I enjoyed the interview but wished the interviewer asked more specific questions about the physics about some of the theories. I'm a more than bit fuzzy about how information content in a black hole is related to the surface area of the black hole, for example.