But why is it so expensive? Silk is the product of the domesticated silkworm, Bombyx mori. The caterpillars eat constantly. They're fed mulberry leaves five times a day. After 45 days of munching ...

Out of curiosity, she raised her own batch of Bombyx mori, the world’s foremost species of domesticated silkworm. When the white caterpillars, “like fat puppies,” disappeared into their ...