Who Lives In Those Other Worlds?

PBS is presenting a great NOVA program this week and next about String Theory. If you missed the first part, they are rerunning it this week and don't miss the second part. It is very far out in terms of how we see the world -- more like a sci fi program, than a science program -- but Brian Greene, a professor of Physics and Mathematics at Columbia University is such an excellent presenter and the way they make visual the complicated theories of physis is so good, you'll find it very accessible.

Start here on their website. The program is based on the book by Greene called The Elegant Universe.

Here's a conversation with Brian Greene that should give you a flavor for it.

Also, other physicists weigh in, some in support of string theory, some clearly critical of it.

The mind-blowing idea is that we've been shortchanging the universe, giving it hardly the credit it deserves for being a lot more than meets the eye and that there are many more dimensions than three. The 3-D world plus the fourth dimension -- time -- is about to go away as a concept -- to be replaced with perhaps as many as TEN dimensions.

This link may help you get your mind around the idea of a 10-D world. One of the physicists in the program asks casualy, "who lives in those other worlds?"