When the US outlawed the manufacture and sale of alcoholic beverages, it inadvertently created one of the most successful black markets in the world. Tim Harford considers how much it costs to make something illegal, and what a failed law reveals about the way criminals make their money.
Available Podcasts from 50 Things That Made the Modern Economy
Subscribe to 50 Things That Made the Modern Economy
We are not the BBC, we only list available podcasts. To find out more about the programme including episodes available on BBC iPlayer, go to the 50 Things That Made the Modern Economy webpage.