Friday, June 8, 2007

Huge Comet Exploded Over Canada

About 12,900 years ago, many strange things seemed to have happened in North America, including the extinction of many mammals and the disappearance of many human cultures. The cause may have been the explosion of a comet over the Canadian ice shield.

http://space.newscientist.com/article/dn11909-did-a-comet-wipe-out-prehistoric-americans.html

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