Big and little questions are answered about the mysteries and marvels of science, technology, inventions, systems and the rules of nature that we come into contact with every day. This episode discusses Hashtag, Lotion, Human Voice, Can opener, Semiconductors, Professional Wrestling, and Robots.

Originally released by Switch International, 2016. Streaming video file encoded with permission for digital streaming by Infobase on July 12, 2021.