The Great Dust Bowl of China

     The Great Wall isn't the only (at least partially man-made) thing in China visible from space. Here's another thing in China that one can view from a comfortable orbit. The above photo is one of Benoit Aquin's award-winning (Prix Pictet 2008) photos of the Dust Bowl in western China. This has been an ongoing situation there, and one should note that it is partially explainable by geo-hydrological factors. After all, this region is one of the earth's land regions furthest from any ocean, and is hemmed in, to a large extent, by mountains that cut it off from rain-bearing clouds. But it seems that the situation has been exacerbated by overfarming, or at least, non-ecological farming strategies. Patrick Alleyn's great article (with pictures by Aquin) in The Walrus can be found here and in beautiful pdf format here.
     The dust clouds blow out of the west periodically and affect China's cities, and even the US. There have been recent attempts to block the dust walls by, for example, installing banks of wind turbines along the edges of the affected areas, admirable from a multitasking perspective, but its hard to see how that could be very effective in blocking tsunamis of blowing topsoil. I would imagine this is probably an area of some concern to the authorities in China, but no apparent solution has yet been arrived at. I put this little aggregate together so that I could learn a bit more about this potentially macro-significant subject, hope it helps.