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.

Mammals Spinning Silk

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Mammals Spinning Silk 4:11

Mammals Spinning Silk

January 18, 200212:00 AM ET

Heard on All Things Considered

Mammals Spinning Silk

Listen · 4:11 4:11

Download
Embed <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.