Christine Loh, Alexis Lau and CM Wong discuss a report on Relative Significance of Local vs. Regional Sources: Hong Kong's Air Pollution.No matter how one chooses to measure it, the air quality in Hong Kong and the Pearl River Delta has deteriorated rapidly over the past 20 years. For the layman, the distance one can see is a good indicator of air quality. The deterioration of Hong Kong's air quality has resulted in a steady increase in the number of hazy days.As the air quality grows worse, questions arise about where the pollution is coming from, and what can be done about it. How significant are local and regional pollution sources for Hong Kong's air quality? The answer to this question is complex, and in fact can be quite different depending on how one approaches the problem - Civic Exchangemoreless
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