Sunday, January 30, 2005

Earth Sciences, Prospecting for groundwater

Although the origin of the water in the Earth that seeps or springs from the ground was long the subject of much fanciful speculation, the arts of finding and managing groundwater were already highly developed in the 8th century BC. The construction of long, hand-dug underground aqueducts (qanats) in Armenia and Persia represents one of the great hydrologic achievements

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