13. Bicycle Helmets, Aluminum, Car Brakes, Lithium Batteries (2001)
This episode demonstrates the production processes for bicycle helmets, lithium batteries, car brakes and aluminum, and shows how each is made.
Release date: 2001-03-31
Season number: 1
Episode number: 13
Runtime: 21 minutes
Rest of the cast - click here to expand
Mark Tewksbury - Narrator (voice), Brooks T. Moore - Narrator (voice)