Silkworms Spin Cocoons That Spell Their Own Doom
Season 9 Episode 7 | 5m 13s | Video has closed captioning.
Those precious silk garments in your closet were made by the caterpillars of a fuzzy white moth – thousands of them. Silkworms spin a cocoon with a single strand of silk up to 10 city blocks long. Humans have bred these insects into weaving machines that can no longer survive in the wild.
Problems Playing Video? | Closed Captioning