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 Tim Garibay from Chicago’s Logan Square neighborhood. His question is: “How do they clean the Bean in Millennium Park?” We’ve got our reporter Maham Khan on the trail and, as always, we’ll keep you posted. 

P.S. Who is “they” anyway? That’s going to be front and center in our investigation.