Are Japanese Pitta Masks effective for use in China?

It’s allergy season again. Spring is here, and the catkin white fluff is in the air!     Lately, I’ve noticed many people wearing these Pitta masks out on the streets of Beijing.     They look sleek, but I wondered whether they actually work. After all, data shows that Japan’s air quality is much better than China’s, so it’s possible that they were designed for things other than […]

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Hong Kong’s air quality might not be as good as you think

Hong Kong doesn’t come to mind when people think of air pollution. However, the data tells a different story–one that has important implications for Hong Kongers’ health. Hong Kong’s Air Pollution in Numbers I just analyzed data on Hong Kong’s pollution data and found that PM2.5 averaged 30 micrograms in 2018. Here’s how that compares to […]

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Did Beijing’s Air Get Better in 2018?

Analyzing new air quality data, Smart Air found that Beijing’s PM2.5 dropped 14% in 2018 compared to the year before. Despite the improvement, Beijing still averages nearly five times the World Health Organization’s annual limit.   Improvement Came Mostly from Winter Enforcement By breaking down the data month by month, analysis shows that the air quality […]

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