I read the most interesting article today. A team of scientists from NASA have discovered a new life form in Mono Lake, California. It is a bacteria called GFAJ-1 that uses the poison arsenic to compose its DNA and cell membranes. Every other life form on Earth is composed of carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur. This changes what we view as alive. The mesh is becoming bigger and bigger!
http://gizmodo.com/5704158/nasa-finds-new-life
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