To talk more about REAL IDs, what they are, and what purpose they’re meant to serve, The 21st was joined by a professor of computer science who's won awards for his research on airport security.

Riding the bus could help you lose weight, or at least that's what some of the data shows. University of Illinois professor of computer science Sheldon Jacobson pulled publicly available county health and transportation records to see if there was a correlation between mass transit use and obesity.

Statistics are playing a larger role in election coverage than ever before.  Websites like Five Thirty Eight and Upshot from the New York Times analyze opinion polls to predict the winner in the race for the White House, as well as US Senate races.  Those websites have a strong track record of predicting winners, but there’s a site on the University of Illinois Urbana campus that’s done even better.