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While one NASA satellite measured up to 25 percent decline in rainfall across two thirds of the Amazon from 2000 to 2012, a set of different satellite instruments observed a 0.8 percent decline in greenness over the Amazon. (sciencedaily.com)
(Robert hints at this himself when he says he's installing a Zappi electric vehicle charger, which automates charging times based on greenness of electricity.) (treehugger.com)
While recent findings based on satellite records indicate a positive trend in vegetation greenness over global drylands, the reasons remain elusive. (pearltrees.com)