Yangtze River dolphin driven to extinction

The Yangtze River dolphin is now almost certainly extinct, making it the first dolphin that humans drove to extinction, scientists have now concluded after an intense search for the endangered species.   Story and video links at http://www.livescience.com/animals/070808_dolphin_extinct.htmThis link is an external site. and http://www.cnn.com/video/#/video/tech/2007/08/08/saunders.china.extinct.dolphins.itnThis link is an external site., respectively.