Brian Greene Explains String Theory and Extra Dimensions

Here's a great video of the world's best dressed physcist, professor Brian Green, describing string theory, extra dimensions and lots of other cool stuff.

The Big Bang Explained

Ever wonder what the big bang is all about? What a multiverse is? This 2 minute video gives a great explanation by physicist Janna Levin, who is also a fantastic author. She wrote How the Universe got is Spots, and the award wining fiction book, A Madman dreams of Turing Machines. Both are great, quirky reads.