PM10 vs PM2.5 – The Difference in Particle Air Pollution

Does size matter? The difference between PM10 and P 2.5 is size. But let me back up. “PM” refers to particulate matter—particles in the air. Those particles are things like organic dust, airborne bacteria, construction dust, and coal particles from power plants (for example, check out this study from researchers in Shanghai who analyzed what […]

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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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