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Old 02-07-2013, 02:31 PM   #1
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Default How Owls Spin Their Heads Without Tearing Arteries

How Owls Spin Their Heads Without Tearing Arteries
by Nancy Shute
January 31, 2013 3:26 PM

How Owls Spin Their Heads Without Tearing Arteries : Shots - Health News : NPR
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The human neck is a delicate stem. Torque it a bit too much, and the carotid and vertebral arteries can rip, causing deadly strokes. People have torn their neck arteries riding roller coasters, doing yoga, going to the chiropractor, being rear-ended in the car even leaning back for a beauty-parlor shampoo.

But owls don't have that problem. They can turn their heads 270 degrees, more than twice what a human can safely handle, without any harm. "If a human being was to try to do the same thing, we would dissect our arteries," says Fabian de Kok Mercado.

He wanted to find out why...
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