http://blogs.discovermagazine.com/notrocketscience/2010/12/02/mono-lake-bacteria-build-their-dna-using-arsenic-and-no-this-isnt-about-aliens/
"For a start, the bacteria – a strain known as GFAJ-1 – don’t depend on arsenic. They still contain detectable levels of phosphorus in their molecules and they actually grow better on phosphorus if given the chance. It’s just that they might be able to do without this typically essential element – an extreme and impressive ability in itself."
"Bacteria from the same order are munching away at the oil that was spilled into the Gulf of Mexico earlier this year. The arsenic-based bacteria aren’t a parallel branch of life; they’re very much part of the same tree that the rest of us belong too."
"That hasn’t stopped the hype machine from rolling forward, fuelled by a public announcement from NASA, teasing a press conference about an “astrobiology discovery”. It’s a shame. "
Après ça reste une grosse découverte, mais c'est over-hypé comme souvent avec la nasa qui a besoin d'argent.