I am continually shocked by how infrequently people worry about freshwater shortages. Take the latest projections of Lake Mead going effectively dry by 2014 - this isn't some kind of nebulous global warming fear - this is happening now, and your grandparents in Arizona are going to turn on the tap, and no water will come out. It doesn't feel like the year 2000 was that long ago, so I know that 2014 will sneak up like tomorrow. I used to work as a water resources consultant, I've been reading the same articles for years, with no real progress - and we can't afford it.
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