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There was a big story a couple weeks ago in China; the most comprehensive survey of pollution in China was released, and it showed a far worse picture of water health than previously estimated. This first national pollution census revealed that China’s water was twice as polluted as previously thought. …Continue reading: China’s Water Pollution Census Consensus: Dirty…
Many of us rely on the Air Quality Index (AQI) supplied by the US Embassy as a guide to pollution levels in the capital. In this, the first in an occasional series of posts on this topic, I will discuss how to interpret this number in a Beijing context. …Continue reading: Using the Beijing Air Quality Index (AQI) – Part I…
One of most popular posts last year was a slide show on air pollution in China. Now, I have created a trimmed-down version that I’ve started to give to high school classes. This slide show is now available below for teachers and parents to use all over China (I hope!). You don’t even need to download; simply click on the “FULL” icon on the lower right section and it will present full screen. There are two links to short videos, as well as a final link to a fun and educational air pollution game from the U.S. EPA. It’s geared more for teens, but it’s also a quick way for adults to understand the basics. …Continue reading: Air Pollution in China: New Slideshow For Schools & Parents…
Recently, I’ve been doing measurements inside and outside of homes in Beijing, looking at fine particle air pollution, of the same size range (less than 2.5 microns) that is monitored by the US Embassy. Most homes have indoor air pollution levels that are similar to outside levels, as Richard has mentioned in a previous post on Beijing air pollution, but in a few cases I have seen levels of fine dust that are much, much higher than outside. In one case recently the dust in the finest range that I am able to measure 0.3 micron to 0.5 microns) was 3 times higher than the outside air, and dust in the 0.5micron to 2.5 micron range was an astonishing 28 times higher than the outdoor level. …Continue reading: Ultrasonic Humidifiers in Beijing – An Unnecessary Risk?…
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(The following is a second post from a new contributor, Chris Buckley of 
Are you aware that certain plants can act as natural air purifiers? Indoor air pollution is a serious problem in many communities, especially in cities. But there are also issues with indoor pollutants such as formaldehyde or varnishes that can also cause problems. There are many air purifiers on the market, but why not save a lot of money and also bring some warmth to your home or office with plants that also scrub your air clean? 
It’s a bit, um, difficult to make air pollution a cool subject for kids. Even my recent 
I’ve written a whole series of posts on both 
(The following is a guest piece from Chris Buckley, owner of 
Thanks go to Vance from 
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