Now Playing: 04-22-14 Marketplace Tech - Funny math

Who would have guessed that the title of America's Funniest City would be determined with the help of a humorless algorithm? Researchers at the University of Colorado's Humor Research Lab pulled data on comedy club locations, birthplaces of famous comedians and where funny people live. And Chicago took the cake. But can an algorithm really identify what's funny...even crack a joke? Plus, how OpenSSL became one of the internet's most important building blocks.