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According to a study published in the September 20, 2011 Proceedings of the National Academy of Sciences, hydrogen can be produced as a plentiful, clean energy source from saltwater, riverwater and bacteria in a process that metabolizes organic waste matter and needs no external electricity.

Paraguay-based ABC Color reports that prolonged drought in the nation's northern state of Bajo Chaco is worrying villagers and farmers, who note that harvests are now in jeopardy as the region enters its third year without major precipitation.