Check out this website by PBS. It is quite a fascinating read. You know, I personally don't believe in race, but I do believe in identity. In a society where our common human identities are cast aside in favour of individualistic and competitive commerce, the idea of race keeps many people in common while the system tries to break us down into individuals. Anyway, that has nothing to do with the website, that's my own rant. Here is the website:

http://www.pbs.org/race/000_General/000_00-Home.htm