Dense smoke from Canadian wildfires is drifting across the U.S., canceling flights and sporting events, and threatening severe health problems for millions of Americans. Chicago's air quality now ...

A growing body of evidence suggests that wildfire smoke raises the risk of neurological diseases, as well as harming the lungs, kidney, and other organs. Locals gather to watch firefighting efforts ...

This video shows several aircraft at the airport surrounded by smoke, fog, and mist during normal operations. The footage captures eye catching visual effects caused by engine starts, weather, and ...