Living things have engineered some pretty awesome materials, but I'm not sure anything measures up to spider silk. It's as strong, as stretchy, and as resilient than even humans' most advanced creations like Kevlar and steel. So how do these awesome arachnids weave such an incredible substance using nothing but their rear ends?

Originally released by Knowledgemotion, 2017. Streaming video file encoded with permission for digital streaming by Infobase on February 21, 2020.

20 MILLION Year-Old Spider!! Unweaving Spider Silk (7:14); .