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

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

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

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

At 3:45 p.m. on Tuesday, the National Weather Service reported an air quality alert in effect until Thursday at midnight for ...

Wildfires burning in western Canada have produced smoke that, carried by steering winds, has reached the eastern U.S., ...

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

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

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

Air quality regulators in Southern California have rejected rules that would have curbed harmful emissions from gas-powered ...

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