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No, arsenic is not a life-giver

A 2010 NASA study that suggested a bacterium could thrive on arsenic instead of phosphorus is refuted by two new pieces of research.

By July 9, 2012

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New bacteria redefines 'life as we know it'

A recently discovered microbe has DNA unlike any other life form on Earth. It is able to substitute arsenic for phosphorus, and it may help us understand how life could prosper elsewhere.

By December 2, 2010