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Curious City's search for the answer led us into the chilly depths of Chicago’s United Center to head ice technician Dan Ahearn - also known as “The God of Ice in the Midwest,” by a fellow Zamboni driver.

It may have been made of military-grade stone, but it only lasted a few years.

Chicago was once the nation's clear leader when it came to manufacturing, but it doesn't quite look that way today. Jessica Chronister asked what things our factories actually churn out these days.

Our Geiger counter couldn’t detect any radiation footprint from the site of the first sustained nuclear chain reaction. (Whew!) But, was safety first and foremost when scientists ran their WWII nuclear experiment in Chicago?

One curious citizen noticed the seemingly random, old-school bus shelters still lingering around the city. She wanted to know why those still remain and if the company JCDecaux had anything to do with it.

Not one, but four of you curious citizens asked us for the story behind the signs on the highway that show the current number of traffic deaths in Illinois. We get into the history of these signs and the nuances behind how they work.

When curious citizen Patrick Gallagher found himself wondering about the best double bills ever hosted on our local concert stages, like many a stumped Chicagoan before him, he turned to us. And we then turned to you all, as well as rock critic and Sound Opinions host Jim DeRogatis.