Examining how much wildfire smoke influences air quality trends

Stanford research reveals the rapidly growing influence of wildfire smoke on air quality trends across most of the United States. Wildfire smoke in recent years has slowed or reversed progress toward cleaner air in 35 states, ...

Vehicle pollution zone to cover all of London

Older and more heavily polluting vehicles will have to pay to enter the entire metropolitan area of London from next August, the British capital's mayor said Friday.

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