The long-term effect of wildfires in Canada: Q and A

The most harmful air pollutant worldwide is fine particular matter. In Canada, the biggest natural source of this pollutant is wildfires. Winds can spread wildfire smoke over a wide area, affecting areas hundreds of kilometers ...

High heat: Spain clocks prelim record of 47.2 C (116.96 F)

Spain set a new provisional heat record of 47.2 degrees Celsius (116.96 Fahrenheit) on Saturday as Southern Europe sweltered under a relentless summer sun. Italy put 16 cities on red alert for health risks and Portugal warned ...

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