Study: Comet Wiped Out First Americans
<BR><A href='http://dsc.discovery.com/news/2007/05/30/comet_spa.html?category=space&guid=20070530103000&dcitc=w19-506-ak-0008'>http://dsc.discovery.com/news/2007/05/30/comet_spa.html?category=space&guid=20070530103000&dcitc=w19-506-ak-0008</a> 
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