Have you ever thought about how much the invention of steel has changed the way the world works? From construction to every day appliances, steel is all around us. But how is it created?

In this episode, we'll look into the engineering, or black magic, behind transforming iron into steel. We'll also take a look at some of the history of steel, including the Bessemer process, Andrew Carnegie's fortune from steel, and even the historic Carrie blast furnace of Pittsburgh, Pennsylvania.