29 Sep '11, 12pm

Most Polluted Cities in the World: In many cities air pollution is reaching levels that threaten people's health...

Most Polluted Cities in the World: In many cities air pollution is reaching levels that threaten people's health...

In many cities air pollution is reaching levels that threaten people's health according to an unprecedented compilation of air quality data released today by WHO (World Health Organization). The information includes data from nearly 1100 cities across 91 countries, including capital cities and cities with more than 100,000 residents. WHO estimates more than 2 million people die every year from breathing in tiny particles present in indoor and outdoor air pollution. PM10 particles, which are particles of 10 micrometers or less, which can penetrate into the lungs and may enter the bloodstream, can cause heart disease, lung cancer, asthma, and acute lower respiratory infections. The WHO air quality guidelines for PM10 is 20 micrograms per cubic meter (µg/m3) as an annual average, but the data released today shows that average PM10 in some cities has reached up to 300 µg/m3.

Full article: http://www.enn.com/enn_original_news/article/43321

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