
If you’ve ever wondered why some parts of Chicago are hotter than others, the city is working on some answers.
One day in late July — at that point, the hottest day of the year — 100 volunteers drove around the city to take heat measurements.

If you’ve ever wondered why some parts of Chicago are hotter than others, the city is working on some answers.
One day in late July — at that point, the hottest day of the year — 100 volunteers drove around the city to take heat measurements.