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Smoke from hundreds of wildfires in Canada has choked the skies over dozens of northern U.S. states in the Great Lakes and ...
The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's ...
Predicting smoke from wildfires, as opposed to standard urban pollution from human activity, is a lot more complicated, ...
Rapidly growing wildfires in several provinces forced thousands of people from their homes and prompted air-quality warnings ...
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