From here
Back in the ice age, Northern European cavemen got all the chicks.
Thanks to a food shortage and a man shortage about 10,000 years ago, men were in such demand they had their pick of mates.
With so much competition among women to find a mate, nature and evolution kicked in to give some cave women a distinctive look to attract the opposite sex: blond hair and blue eyes.
So says a new study published in the British science journal Evolution and Human Behavior.
Found here.
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