Recent Canadian wildfires are record-breaking – and will threaten US air quality for days from the Guardian Eric Holthaus

After historic seasons in last two years, blazes continue trend of warm, dry conditions intensified by climate crisis

Enormous early-season wildfires have erupted across the prairie provinces of Canada this week, taxing local emergency response and threatening a long stretch of dangerous air quality across eastern North America.

The country’s largest fires – the Bird River fire and the Border fire – remain completely uncontained in northern Manitoba. In Manitoba alone, wildfires have burned about 200,000 hectares already this year – already about three times the recent full-year average for the province.

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