Chicago, viewed from the air, looked like a year-round Halloween display. But in 2017, the city started swapping out the sodium vapor lights for energy-efficient LEDs, which create a whiter radiance.

ComEd said crews have been testing the emergency lights ... close roads in city, suburbs ComEd is working with building management, Chicago fire and the city of Chicago to reenergize the Willis ...

More of Park Ridge’s iconic gas lights could be going away as city and park district officials consider the possibility of new electric options for Hodges Park in Uptown. Wayne Zingsheim ...