There were plenty of questions Wednesday after a water tank fell from the roof of a residential building in Chicago and injured three people. Among the most basic questions: How do rooftop water tanks work? And are any still in use in Chicago? After interviewing experts on rooftop water tanks, we answered those questions in this graphic, which accompanied a front-page story about the incident.
Diagram: Work begins Friday on Wells Street Bridge.
Chart: How the S&P 500 reacts to public sentiment
Phony fish: You may not be getting the fish you paid for.
Charts: Illinois roadway fatalities have declined steadily since the 1970s. In 2009, the Illinois Department of Transportation adopted a “zero deaths” safety campaign.
Timeline: How a college student from South Holland bought numerous handguns in Indiana and tried to illegally sell them on Chicago’s most violent streets.
Diagram: What buffered and barrier-protected bike lanes look like.
Chicago Transit Authority plans to spend up to $2 billion on as many as 846 next-generation rail cars. Here’s a look at the current CTA rail fleet.