Canada: wildfires rage across British Columbia – video

Hundreds of uncontrolled forest fires have spread across Canada, threatening critical infrastructure and forcing evacuations. Wildfires are common in the country's western provinces, but this year flames have rapidly spread towards the east. About 3.8m hectares (9.4m acres) have already burned, according to government ministers. The wildfires have created a blanket of smoke that has spread across several US cities, including New York, forcing residents to stay indoors

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