Analyzing air pollution data from the US Consulate, Smart Air found that Kolkata’s air pollution rose 19% in 2018 compared to last year. This extra smog pushes Kolkata to an average of more than nine times the World Health Organization’s annual limit.
Click here to read more: https://smartairfilters.com/en/blog/did-kolkatas-air-get-better-in-2018/
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