UM-Bot Posted May 22, 2007 #1 Share Posted May 22, 2007 Image credit: NASA Submitted by Waspie Dwarf: A controversial new idea suggests that a large space rock exploded over North America 13,000 years ago. The blast may have wiped out one of America's first Stone Age cultures as well as the continent's big mammals such as the mammoth and the mastodon. The blast, from a comet or asteroid, caused a major bout of climatic cooling which may also have affected human cultures emerging in Europe and Asia. View: Full Article | Source: BBC News Link to comment Share on other sites More sharing options...
STIX Posted May 22, 2007 #2 Share Posted May 22, 2007 It exploded in the air!! (jk) Link to comment Share on other sites More sharing options...
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