I would love to know what it was that wiped them out some 13,000 years ago. It's still highly controversial but here's one theory that is still being debated:Younger Dryas impact hypothesishttp://www.sciencedaily.com/releases/2012/09/120918111320.ht...http://en.wikipedia.org/wiki/Younger_Dryas_impact_hypothesis...I heard the Firestone team talk about this at an archaeology conference back in 2007 - just before their publication appeared. It was very exciting, but they would not provide as many details as many would like to have heard. By 2009, a lot of people were claiming that the theory was not holding up to independent analysis of others and included some misinterpretation of the data. But recently, there have been additional findings backing up the idea of a comet explosion in the atmosphere over Canada.
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