Signs of life on Mars--from 1976

Building on previous tests that found signs of microbial life, scientists re-examine data from the Viking mission and once again find strong signs of organic compounds in Red Planet soil.

Source: http://news.cnet.com/8301-11386_3-57413591-76/signs-of-life-on-mars-from-1976/?part=rss&subj=news&tag=2547-1_3-0-20

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