From the mandibles of a creepy crawly comes a revolution in biotechnology. It’s worm spit, from the silkworm moth caterpillar, although you may know it by its more common name: silk. Science Friday’s Luke Groskin and Julie Leibach took a lab tour with bioengineers at Tufts University to learn how they are crafting this versatile protein into myriad medical, optical, and bioelectronic materials and devices. Read the related article, and try this cocoon dissection.