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Intel brains now blood thirsty

Evolution has not only made human brains larger, but has also increased the supply of blood to the brain, a new study has found.  Research team calculated how blood flowing to the brain of human ancestors changed over time, using the size of two holes at the base of the skull at allow arteries to pass to brain. Findings allowed the researchers to track the increase in human intelligence across evolutionary time. To allow our brain to be so intelligent, it must be constantly fed oxygen and nutrients from the blood.

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