Climate change sparks extreme weather worldwide

Wildfires

The impact of the heat has been particularly severe in North America, where Canada is experiencing its most severe wildfire season on record. The blazes have burned more than 8.1m hectares (20m acres) across the country -- 21 times above the average over the last decade. Over 120 million people across more than a dozen US states are under air quality alerts due to smoke from Canadian wildfires.

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