Water is getting scarce. This year has brought extreme drought, low snow packs, and record low stream flows in a number of river systems. We see Las Vegas waging water war with the open ranch lands to the north, Atlanta in protracted battles with downstream states over its primary water supply at Lake Lanier, and water tables beneath the San Joaquin Valley–the source of 40 percent of the nation’s fruits and vegetables–dropping. A recent study by the Natural Resource Defense Council (NRDC) suggests that by mid-century, half the counties in the U.S. will be facing water scarcity. Read more at The Huffington Post….