- May 20, 2009
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Why did the glaciers start melting 15,000 years ago? Did cavemen drive SUV's?
What makes you think it ever stopped when we didn't even arrive on this continent in meaningful numbers until 200 years ago? Who was monitoring the glacier retreat back then?
What makes you think it ever stopped when we didn't even arrive on this continent in meaningful numbers until 200 years ago? Who was monitoring the glacier retreat back then?