But, whether it’s for super-strong sutures for surgery or an air bag, how do you come up with enough raw material? Spider farms have been tried, but arachnids tend to kill each other.

“The problem is that the spiders are territorial, and so no matter what you do, there are only a certain number of spiders you can put in a certain space,” says Lewis.

That’s where the goats come in.

via nsf.gov

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