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ScienceDaily (Apr. 1, 2010) — Some 13,000 years ago the Earth was struck by thousands of Tunguska-sized cometary fragments over the course of an hour, leading to a dramatic cooling of the planet, according to astronomer Professor Bill Napier of the Cardiff University Astrobiology Centre
Originally posted by Drunkenbob
Is this why Native American culture seemed to not advance as quickly as its old world counterparts?
Diamond suggests a key difference between the continents: the primary axis of Eurasia is east-west, whereas the axes of Africa and the Americas are north-south. Because crops are climate dependent and climate varies strongly with latitude, crops and domestic animals could spread across Eurasia more easily.
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Originally posted by NoEXcUseS
I just yesterday or Wednesday read a thread that said the cooling 13,000 years ago was caused by a massive flood, trapped behind glacial walls that spilled out into the Atlantic and disrupted oceanic currents. Now this? Hmm.. not trying to derail the topic of Native culture destruction by means of galactic intervention, but it's just interesting how back to back explanations come for the cooling, suggesting wildly different theories.
Originally posted by Arbitrageur
And the clovis people weren't NEARLY wiped out, they were COMPLETELY wiped out right? As far as I know all evidence gathered so far shows the clovis people vanished around that time.]