Whether you're running the seven kingdoms of Westeros or flying to Mars -- you have to figure out how to pay for everything. Many economists are fans of sci-fi because those worlds take economics models to an extreme, especially when its comes to the issue of scarcity vs. abundance. Sarah Skwire looks at what happens when strawberries are precious like gold, or hot Earl Gray tea can materialize instantly. And Matthew McCaffrey explains why we should all worry that "Winter is Coming." 

Economics of Thrones and Starships

Imaginary Worlds is a podcast series about science fiction and other fantasy genres.