A form of harmful air pollution that often can't be plainly observed is now being tracked with a groundbreaking new tool developed by scientists that allows residents to see where it's coming from.

This screenshot of the Climate TRACE tool shows where pollution is generated and how it moves across the Pittsburgh region. The team behind the pollution-monitoring tool Plume Pittsburgh is taking its ...

Hundreds of tiny air-quality sensors are tracking pollution across Chicago’s neighborhoods, and the data is now at your fingertips. The Chicago Department of Public Health has launched “Open Air ...