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Hosted on MSNHuman Arms Keep Growing an Extra Artery, And Here's WhyPicturing how our species might appear in the far future often invites wild speculation over stand-out features such as height, brain size, and skin complexion. Yet subtle shifts in our anatomy today ...
The reason we can use our hands for so many things is their extraordinary anatomy. Underneath the skin, hands are an exquisite ... while others snake their way to the arm. The wrist is a floating ...
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