The secret to how scorpions, spiders, and ants puncture tough skin

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Many small animals grow their teeth, claws and other “tools" out of materials that are filled with zinc, bromine and manganese, reaching up to 20% of the material's weight. My colleagues and I call these “heavy element biomaterials," and in a new paper , we suggest that these materials make it possible for animals to grow scalpel-sharp and precisely shaped tools that are resistant to breaking,…

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