Posts Tagged ‘ global air pollution ’

New 6-yr study on PM2.5: 80% of the global population lives in places where concentrations of PM2.5 exceed the tightest air quality guideline set by the World Health Organization (WHO) of 10 micrograms per cubic meter (µg/m3). Even by the laxest WHO stds, 38% of central and 50% of eastern Asia exceeded the guidelines....
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