PM2.5 particles increased World wide
WHO announced the latest statistical results on the world's major urban atmospheric environment, pointed out that the fine particulate matter PM10 and particulate matter PM2.5 more than 80% of the city's population of more than WHO standard. WHO says "especially in low and middle income countries is worsening". It is pointed out that the severe atmospheric environment may lead to the risk of lung cancer and respiratory disease rise, urged countries to develop more effective measures, and air purifier can effectively...