You’ve got to print a lot of money when hyperinflation hits -enough so that people could use them as wallpaper! But honestly, anything with value can be traded for anything else with value. Bills and coins are just a way to keep up with that value. Places around the world have done their trading in a lot of different ways. Adriene Hill from Crash Course Economics guest-hosts this week’s mental_floss List Show, in which we find all kinds of things about money. -via mental_floss