Ministry says air quality returning to normal
After issuing a warning over the country’s air quality on Friday, the Ministry of Environment said on Sunday that the PM2.5 concentration levels in the country were returning to normal. PM2.5 refers to atmospheric particulate matter (PM) that has a diameter of less than 2.5 micrometres, which is about three per cent of the diameter of a single human hair. If inhaled, these particles can make their way into the lungs and even blood vessels, eventually causing damage to the body. …
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https://www.phnompenhpost.com/national/ministry-says-air-quality-returning-normal
