A number of factors are now contributing to a "tipping point" on climate change and Canada's forests that the expert said ...

The satellite imagery shows the wildfire smoke as a fuzzy white look on the images. The wildfire smoke is thick just to ...

The air quality index on Tuesday across the Midwest and the Northeast ranged from "moderate" to "unhealthy" for sensitive adults. Some areas in northern Wisconsin, eastern Pennsylvania, northern ...

We’re more than two-thirds of the way through Chicago’s meteorological summer, and so far when the weather hasn’t been suffocatingly hot and humid, it’s featured air that’s dangerous for too many of ...