air pollution guidelines. As this map reveals, 91 per cent of all countries had unsafe levels of air pollution in 2024. Chad, Congo, Bangladesh, Pakistan and India had the dirtiest air.
Most of the world has dirty air, with just 17% of global cities meeting WHO air pollution guidelines, a report Tuesday found.
The program had used sensors at more than 80 U.S. embassies and consulates to track air quality, mostly in places where such ...
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