In 2017, the annual average air pollution in Hanoi, Vietnam, was 4x as high as the acceptable WHO level. @EPIC_India's #AQLI tracks the #PM25 levels in every country: https://www.reuters.com/article/us-air-pollution-hanoi/hanoi-enjoyed-just-38-days-of-clean-air-in-2017-report-idUSKBN1FJ164?mc_cid=e38e371589&mc_eid=[UNIQID …]pic.twitter.com/TY8NaHP1wH
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