Three Mile Island’s Unit 1 nuclear reactor operated safely and reliably for decades before the plant was retired in 2019.

Smoke from Canadian wildfires is beginning to worsen air quality in the eastern U.S. as several Midwestern states battle ...

Although the majority of wildfires are occurring in western Canada, smoke from these fires has been drifting eastward, ...

Smoke from more than 100 wildfires blazing in Canada is expected to spread to impact air quality in more U.S. state.

In the U.S., smoke from Canadian wildfires was detected drifting through Montana, North Dakota and northern Minnesota.

Wildfires in Canada have triggered widespread evacuations and hazardous air quality alerts across the northern United States.

Canadian Wildfires continued to burn, and smoke from the Canada fires could be affecting U.S. air quality in several states. Is Indiana impacted? What we know ...

A mix of Saharan Dust blown across the Atlantic by the trade winds and smoke from wildfires in Canada is leading to lower air ...

Canada wildfires continue to burn, and smoke from the Canadian fires may affect U.S. air quality in several states. Is Kentucky impacted? What we know ...

Iowa issues air quality alert, wildfire smoke creates 'unhealthy' conditions ...

Here is what to know as of Monday, June 2. Parts of Montana, North Dakota, South Dakota, Minnesota, Iowa and Illinois had swaths of air quality warnings ranging from "moderate" and "unhealthy for ...