This is great. A new life form was discovered that uses Arsenic in place of Phosphorus as part of the backbone of it's RNA and DNA.
"The idea of alternative biochemistries for life is common in science fiction," said Carl Pilcher, director of the NASA Astrobiology Institute at the agency's Ames Research Center in Moffett Field, Calif. "Until now a life form using arsenic as a building block was only theoretical, but now we know such life exists in Mono Lake."
http://www.nasa.gov/topics/universe/fea ... mical.html
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