After a year of delays, the Array of Things urban data sensor project is back on track and prepping to collect all sorts of information on Chicago's streets by early next year. Joining us to discuss the initiative are the project’s lead scientist Charlie Catlett and author Lori Andrews.

Lori Andrews

Are you on Facebook? Twitter? Even if you aren't, more personal information about you is floating around out there than you might possibly imagine. We talk with a Chicago author who says you might be surprised by how much of your privacy you've already lost.