The severity of the 2016 drought over tropical South America was unprecedented." Read more: https://www.theguardian.com/environment/climate-consensus-97-per-cent/2017/aug/03/study-finds-human-influence-in-the-amazons-third-1-in-100-year-drought-since-2005#_scpsug=crawled_126412_7b4cc230-7834-11e7-ea89-00221934899c