Submitted by mydriase t3_11l889n in dataisbeautiful
SensorAmmonia t1_jbbgkvv wrote
Reply to comment by diemos09 in Explore North America 20,000 years ago, at the peak of the last glacial age [OC] by mydriase
North of that line the climate was more than 12 degrees colder than today forcing settlers to move south.
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