crazietalk.net

Apparently, researchers at Duke think that the appendix really does have a use in the immune system, but that our industrialized society with clean drinking water and sewer systems has rendered it obsolete. Appendicitis is apparently caused, they say, by the appendix over reacting cause it doesn't have enough work to do any more.

http://news.yahoo.com/s/livescience/200 ... tpromising

Interesting, I thought. They even mention lemurs! ;)