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Pesky Perchlorates All Over Mars

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Science  12 Apr 2013:
Vol. 340, Issue 6129, pp. 138
DOI: 10.1126/science.340.6129.138-b

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Curiosity rover has discovered perchlorates in equatorial Gale crater, implying that they carpet the martian surface and explaining why the rover stumbled in its first search for organic traces of ancient martian life.