CBS Chicago | Turning Chicago's alleys green to reduce flooding from storms @CBSChicago | Uploaded October 2024 | Updated October 2024, 1 hour ago.
Chicago has 1,900 miles of alleys, making it one of the top alley capitals in the world, but because many aren't connected to the sewer system, they're prone to flooding. The CBS News Chicago Climate Watch Team found a city project that's working to change that.