No City is an Island When It Comes to Air Pollution
Sunday, May 3rd, 2009
Maybe all remember the 2008 Summer Olympics in Beijing (or maybe not, Michael Phelps…), and if you do remember than perhaps you also recall that the city of Beijing went to some lengths to curb its air pollution during the course of the Games.
Well, the data is being analyzed by some researchers that want to see what kind of tangible reductions in particulate pollution came with that olympic effort to cut back on industrial and automobile emissions.
Atmospheric scientist Jan Cermak of the Swiss Federal Institute of Technology Zurich and a a mysteriously unnamed colleague looked at the aerosols in the atmosphere above the city of Beijing from the years 2002 through 2008. They used satellite data, which could measure the aerosol levels, but not the true location in terms of high-atmosphere or lower ground levels. Wind patterns, weather reports, rainfall, humidity — these factors were all taken into account to determine what the aerosol levels would have been during the Olympics and what they actually were from July to September 2008.
And guess what? It really didn’t matter what Beijing did. The city achieved some reductions in aerosol levels, but really nothing to get excited about. And why, you ask? Because so much air-bourne pollution came in to Beijing’s skies from other regional sources.
It turns out that the Chinese only achieved a modest reduction in aerosols. The researchers report in a paper in press in Geophysical Research Letters that pollution-control efforts reduced the overall amount of aerosols in the atmosphere by about 10% to 15%. That small change highlights the importance of factors such as wind direction in determining local pollution, says Cermak. In spite of the reduction in local emissions, winds from the south and southeast sullied Beijing’s air by bringing in pollution from distant industrial areas, he says. — Science Magazine News
You see, that’s the funny thing about air-bourne pollution. It doesn’t stay still like land-based pollution. Oh, wait, land-based pollution doesn’t stay put, either. It leaches into the water supply. Huh, maybe we should just try harder not to pollute in the first place.
Naw, that will never work.
Still, the numbers show that Beijing did achieve a 10 to 15 percent reduction in aerosols above the city. Am I the only one who thinks that is a good start? Too bad the Chinese only did it for three months. Who knows what reductions could be achieved with a long-term cut in emissions?
air pollution, Olympics, China, Beijing, emissions, aerosols, atmosphere





And get this…the study of using plants to clean the air all started with NASA in the 1960’s. The materials used in the enclosed environments in space are synthetic and the VOCs off-gassed were making people sick. An environmental scientist named Wolverton started studying how plants could clean up toxic waste, and he found that simple houseplants can be really effective little cleaners of indoor air pollution. Today, Wolverton’s company is
In fact, did you know that 30 children a year die in the United States from accidental poisoning? Thanks to the National Poison Prevention Week, that number is down from a high of 216 in 1972. What I think is even more impressive is that the numbers of accidental poisonings are down despite the increase in household poisons we keep around our typical American homes. Good work, NPPW!
I’m going to go you one better and suggest that instead of keeping lots of
Within days of getting my email from 

Americans don’t seem all that keen on their fruits and veggies, or at least
The canning process involves heating, which will kill any microorganisms that may be living on or in vegetables and fruit. It is very rare that a canned product will carry food-borne illness (which has become a problem with fresh produce lately). However, some nutrients withstand the canning process better than others. Vitamin C and folate are two such nutrients that can be lost during canning.
there are less nutrients lost due to age, which may make frozen produce better than some imported “fresh” produce.
Geez, it’s not easy being green…but if you are serious about it, you may want to can or freeze your own veggies and fruits. When you are at your local farmers market or farm stand this summer, buy larger quantities of fresh produce and process them yourself for winter consumption. Start out freezing fruits like berries, which are easy, and as you become more comfortable and savvy, try your hand at tomatoes.
A new study came out that finds that by cutting pollution in your city, you can live longer.



















