Mammals Spinning Silk Ounce for ounce, spider silk is many times stronger than steel. NPR's Dan Charles reports that scientists this week have described how they are using cows -- and other animals -- in their attempts to produce spider silk artificially.
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Mammals Spinning Silk

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Mammals Spinning Silk

Mammals Spinning Silk

Mammals Spinning Silk

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  • <iframe src="https://www.npr.org/player/embed/1136600/136600" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">

Ounce for ounce, spider silk is many times stronger than steel. NPR's Dan Charles reports that scientists this week have described how they are using cows — and other animals — in their attempts to produce spider silk artificially.