An interesting interview with Peter Gleick of the Pacific Institute that raises the spectre of "water bankruptcy" and offers some approaches, one he calls the "soft path" for water - a long-term, sustainable management of our water systems vs. the "hard path" of centralized infrastructure and big construction projects we've been using in the last century.   http://www.alternet.org/water/127703/peter_gleick%3A_how_we_can_avoid_a_world_without_water/?page=1