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Birds shifting north; global warming
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[QUOTE]Originally posted by glassman: [QB] [QUOTE]Originally posted by Propertymanager: [qb] It's a shame that it is impossible to desalinate sea water....or is it? LOL! [/qb][/QUOTE]how much does it cost? [b]Desalination is not cheap In California, USA, the towns of Santa Barbara and Avalon have begun using desalination methods to remove the salt from seawater and make it suitable for drinking. A promising method to desalinate seawater is the "reverse osmosis" method. You might be more familiar with another method, distillation, which involves heating seawater and capturing and condensing the steam. As of 1998, the high cost of desalination has kept it from being used more often, as it can cost over $1,000 - $2,200 per acre-foot (1992 cost basis) to desalinate seawater as compared to about $200 per acre-foot for water from normal supply sources. Desalination technology is improving and costs are falling, though, and Tampa Bay, Florida is currently desalinizing water at a cost of only $650 per acre foot. As both the demand for freshwater and technology increase, you can expect to see more desalination occurring, especially in areas, such as California and the Middle East.[/b] http://ga.water.usgs.gov/edu/drinkseawater.html [/QB][/QUOTE]
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