Arsenic-based bacteria

In Mono Lake, created by scientists, working together with evolution:

Hours before their special news conference today, the cat is out of the bag: NASA has discovered a completely new life form that doesn’t share the biological building blocks of anything currently living in planet Earth. This changes everything.

(That is a bad summary it turns out, try the paper itself.)  And here and here.  (This piece covers the skeptics.)  This is important, no?  It implies a lot more life out there in the universe than many people had thought.  


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