Last week a Florida man was swallowed by the Earth as he slept, the victim of a sinkhole. In 1981, another Florida sinkhole ate a swimming pool and a Porsche repair shop. Randall Orndorff, a geologist for the U.S. Geological Survey, discusses this mysterious phenomenon, and whether technology exists to predict when?and where?the surface might crumble.
Source: http://www.npr.org/2013/03/08/173821488/when-the-earth-swallows?ft=1&f=1007
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