Brian Greene on String TheoryJuly 20, 2006
This video doesn’t really go into the how of string theory much, but for those of you who may be slightly interested, it does describe some of the features and implications of it such as the multiple universes scenario and what not. Greene made a wonderful series a few years back called The Elegant Universe which explained String Theory with remarkable clarity. It is a very difficult subject to understand, but once you start to understand the basics of the idea, it is absolutely fascinating. Enjoy.