Curious City is a news-gathering experiment designed to satisfy the public's curiosity. People submit questions, vote for their favorites, and WBEZ reports out the winning questions in real time, on Facebook, Twitter and the timeline above.
This round's winner is Mark Sheldon from Evanston. His question is: "Why does the North Side have names for streets and the South Side have numbers?" We're tracking down answers now, so check back for updates as we go along.