You're choking: Where particulate matter comes from | South China Morning Post
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  • Jan 25, 2015
  • Updated: 2:55pm
Infographics AIR POLLUTION

You're choking: Where particulate matter comes from

Air pollution has long been a problem in Hong Kong, particularly the heavy smog that always seems to linger in the winter months. Here we examine how the tiny pollutants affect our health.

PUBLISHED : Monday, 24 March, 2014, 2:39pm
UPDATED : Monday, 31 March, 2014, 7:46am

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You're choking: Where particulate matter comes from