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In recent years, drought has hit much of the Western United States. While recently California has gotten the lion’s share of media attention, it is hardly the only western state short on water. Now NASA is warning that things may get a whole lot worse. Rather than a year, or handful of years without adequate rainfall, NASA is predicting that anthropogenic climate effects may well lead to droughts of historic intensity that last decades. NASA’s announcement can be found here: http://www.nasa.gov/press/2015/february/nasa-study-finds-carbon-emissions-could-dramatically-increase-risk-of-us/index.html#.VOaDejXq2JC

Lest one come away with the impression that climate-change-fueled drought is mainly a North American problem, let me point out the situation in Brazil, known for its lush Amazon basin, where reservoirs are running dry, and the people are getting desperate: http://www.smithsonianmag.com/smart-news/sao-paulo-running-low-water-180954294/