It's time to open the vaults on something that many of us use every day – coins! There's some 29 billion coins in circulation, but how are they made and what engineering challenges are present in making so many shiny, tiny pieces of metal?

Potatoes (Fruit & Root Crew)
05:22

Jack sells Daisy (Episode 04)
03:23

The Grand Finale (Episode 10)
04:10