Bacteria stir debate about 'shadow biosphere' - Washington Post

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Bacteria stir debate about 'shadow biosphere' Washington Post But the discovery opens the door to that possibility and to the related existence of a theorized "shadow biosphere" on Earth - life evolved from a different ... Arsenic-Eating Bacteria Hint at Possible 'Shadow Biosphere' LiveScience.com The enigma of terrestrial life (update) Gearfuse NASA: New Life Form Discovered on Earth? its Chemical Building Blocks of Life ... Gather.com Newsroom America -Columbia Journalism Review (blog) -Mother Nature Network (blog)  »