33 of the largest cities in the world have levels of particulate matter four times higher than the World Health Organisation’s guidelines of 10 ug/m3. The worst polluted cities in the world are all in Asia, with China, India and…
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33 of the largest cities in the world have levels of particulate matter four times higher than the World Health Organisation’s guidelines of 10 ug/m3. The worst polluted cities in the world are all in Asia, with China, India and…