Smoke and heat warnings affect more than 170m in US
Canada wildfires spark air quality alerts in Chicago and Milwaukee
US to send satellite data to Canada to help detect wildfires
New round of smoke from Canada fires prompts air quality alerts across the Upper Midwest
Jury finds Berkshire's PacifiCorp unit liable in 2020 Oregon wildfires
Analysis-Canadian wildfires shutter sawmills, drive up lumber prices
Canada wildfire crews try to control the uncontrollable
Quebec hopes rain, outside help can be turning point in fight against fires
Canadian province of Quebec sees progress in wildfire battle
Wildfires spread in British Columbia, Quebec sees signs of progress
Washington, New York breathe easier as smoke drifts further south
North American wildfires and air quality alerts in maps and images
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