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[–] derram ago 

https://archive.is/0W4zY :

Hedgehog Spines Hold the Secret to Preventing Concussions | Inverse

'As a hedgehog falls toward the ground, it keeps itself safe by rolling into a ball to surround itself with “spines” that absorb the impact. (Hedgehog spines are colloquially referred to as “quills,” which is the official term for what porcupines have. '

'That’s just part of how the helmet layer emulates an actual hedgehog. “The other part has to do with layout: the hedgehog has about 7,000 spines. '

'If you ever find yourself watching hedgehog go about its day, you’ll notice that they tend to fall out of trees — a lot. '

'Hedgemon wants to add a rotational component to helmets to fix this, and to improve general impact absorbency and multi-hit durability. '

'That’s not just strength in numbers, but the spines also overlap and interact with each other,” he adds. '

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