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Living off Toxic Waste -- Bacteria That Munch on Arsenic (1 of 9)

Caption: This shows the moonrise over Mono Lake. Mono Lake, located in eastern California, is bounded to the west by the Sierra Nevada Mountains. This ancient alkaline lake is known for unusual tufa formations rising from the water's surface (shown here) as well as for its hypersalinity and high concentrations of arsenic. (Sept 2010). This image relates to an article that appeared in the Dec. 2, 201,0 issue of Science Express, published by AAAS. The study, by Dr. Felisa Wolfe-Simon at NASA Astrobiology Institute in Menlo Park, Calif., and colleagues was titled, "A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus."

Credit: Image 2010 Henry Bortman

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