>It doesn't say much about the contents of the book; but it does seem to concentrate on "extra dimensions". >

Here is a link to an interview with Lisa http://thoughtcast.org/casts/lisa-randall-harvard-physicist

>Some "light reading" here: http://en.wikipedia.org/wiki/Why_10_dimensions%3F#Number_of_dimensions

I have seen that link before, some very good theories contained within.