Some Helpful Links Are:
http://www.poconorecord.com/apps/pbcs.dll/article?AID=/20080506/multimedia02/80505
http://news.nationalgeographic.com/news/2003/09/0902_030902_plasticbags.html
http://www.reusablebags.com/facts.php?id=4
http://www.plasticbageconomics.com/index.php?option=com_content&task=view&id=17&Itemid=31