Long before European settlers arrived, the Hopewell culture created massive earthworks throughout the Ohio Valley that continue to baffle and impress modern engineers. Chillicothe is home to several ...

The Minnesota Pollution Control Agency has issued an air quality alert for all of Minnesota. Most of the state will be in the ...

PARK CITY, Utah — Park City residents may soon get some relief from smoky skies as winds shift in the coming days, according ...

Ryan Kiedrowski, Local Journalism Initiative Reporter, The World-SpectatorA cooler, wetter-than-usual July has helped bolster ...

The Canadian government’s map of wildfire smoke fine particulate matter shows intense smoke over Saskatchewan and Manitoba, ...

The Monroe Canyon Fire burning in Sevier County continues to grow, with Monday bringing the "hottest temperatures so far" and ...

Canada is facing another dangerous wildfire season, with burning forests sending smoke plumes across the provinces and into ...

Federal firefighters say they're still focused on structure protection as they continue to battle a central Utah wildfire ...

Officials are urging residents to take precautions as wildfire smoke and extreme heat bring poor air quality and health risks ...

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Officials warned young children and those with respiratory illnesses to take precautions. For weeks, smoke from Canadian ...

But when smoke plumes are close to the surface, people are breathing in wildfire chemicals and tiny particles. Those particles, known as PM2.5, can get deep into the lungs and exacerbate asthma and ...