Thought you'd all be interested in this NY Times online article http://www.nytimes.com/2005/02/01/science/01evo.html?ei=5094&en=143526089b4b8af2&hp=&ex=1107320400&adxnnl=1&partner=homepage&adxnnlx=1107284478-BCHQ8dVAxFIHDMfhOp0qnw