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

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

Smoke from Canadian wildfires began to worsen air quality in the eastern U.S. on Wednesday as several Midwestern states ...

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

The ongoing Canadian wildfires have reportedly blanketed a third of the United States, affecting millions, with the National ...

Wildfires burning in western Canada have produced smoke that, carried by steering winds, has reached the eastern U.S., raising growing concerns about poor air quality.

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

A series of wildfires burning across central Canada sent smoke billowing into the U.S. over the weekend, with few signs that ...

Parts of Montana, North Dakota, South Dakota, Minnesota, Iowa and Illinois had swaths of air quality warnings ranging ... air pollution and increased health concerns.

As wildfires burn out of control in Canada, smoke is stretching cross the border into the United States, with some states ...