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NASA’s next small step may be into Martian manure

Posted: 8/4/2008 12:00:00 AM   Reads: 503   Submitted By:0x6a656666   Category: Mars Anomalies   Source: www.smh.com.au
Asked to speculate yesterday on what it may have now found, Dr Clarke said the instrument was designed, among other things, to spot dissolved ammonium and nitrate salts. "On Earth, if you have a lot of ammonium and nitrate it usually means there is organic activity. We excrete it as waste and other organisms use it."
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