Genes from our extinct relatives live on in modern humans - February, 2017
From a lithe tribesperson of the Kalahari, to a freckled redhead from Ireland, to a sleek-haired, ruddy-cheeked inhabitant of the Tibetan plateau, Homo sapiens come in many different shapes, sizes, hues, and appearances. While we tend to notice differences that are easy to spot, other "stealth" variations in human populations are not necessarily observable from physical appearance alone. Now new research into Arctic-dwelling Inuit populations points to a surprising origin for one such "stealth" trait — the ability to tolerate frigid temperatures.
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