Discovery of "Arsenic-bug" Expands Definition of Life - NASA Science
http://science.nasa.gov/science-news/science-at-nasa/2010/02dec_monolake/
NASA-supported researchers have discovered the first known microorganism on Earth able to thrive and reproduce using the toxic chemical arsenic. The microorganism, which lives in California's Mono Lake, substitutes arsenic for phosphorus in the backbone of its DNA and other cellular components.
And see Mono Lake and NASA just changed our understanding of life on earth | The Mono-logue and Mono Lake
NASA-supported researchers have discovered the first known microorganism on Earth able to thrive and reproduce using the toxic chemical arsenic. The microorganism, which lives in California's Mono Lake, substitutes arsenic for phosphorus in the backbone of its DNA and other cellular components.
And see Mono Lake and NASA just changed our understanding of life on earth | The Mono-logue and Mono Lake