China's smog problem explained

A thick haze has this week smothered Beijing and surrounding areas, with tens of millions of people in northern China under severe pollution warnings.

'It's horrible': Spain sweats through day 2 of heatwave

Spain issued "extreme" danger alerts over scorching temperatures in three regions Tuesday as firefighters said a blaze that had raged for days in the Canary Islands had almost burnt itself out.

Canada wildfires shroud New York in apocalyptic haze

Smoke from Canadian wildfires shrouded New York in a record-breaking apocalyptic smog Wednesday as cities along the US East Coast issued air pollution warnings and thousands evacuated their homes in Canada.

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