The Aral Sea, once the fourth largest lake in the world, continues to shrink and is now 10% of its original size. UN secretary general Ban Ki-moon recently called the drying up of the Aral Sea one of the planet’s most shocking disasters. Feeder streams to the sea have been diverted by irrigation and by the completion of upstream dam projects. The result has been the ruin of the local fishing and shipping economy, and wind-carried salty sands have created regional health problems. Landsat satellite images taken on 29 May 1973 (left) and 18 October 2009, show the dramatic change in the region.
From Landsat, by Nasa & the US Geological Survey.