Air pollution shortened average Indian life expectancy by 5.2 years: Report
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Air pollution has shortened the average Indian life expectancy by 5.2 years and residents of Delhi could see 9.4 years added to their lives if pollution were reduced to meet the WHO guideline, according to a new report. WHO guideline stipulates that PM2.5 (particulate matter less than 2.5 microns in diameter) not exceed 10 micron per cubic metre and that PM10 not exceed 20 micron per cubic metre.