Silk has been valued for millennia, but in recent years, scientists have paid attention to the material because it’s extraordinarily strong, making it useful for bulletproof vests and body armor. The potential of silk is more than just protecting the outside of our anatomy, however, and researchers are now engineering silk so it can one day heal our wounds, hold up our bones, and become part of our bodies.
Silk is made by silkworms for their cocoons and by spiders for their webs. The two kinds are spun differently and have some different properties. (For example, the silk made by worms tends to be weaker). But in both cases, the material is strong, stretchy, and safe to use inside the human body — which opens it up to a wide range of...
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