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Update: The Arsenic-Based Bacterium Debate

Sun, Dec 12, 2010 at 12:39 pm PST

That announcement from NASA-funded scientists of the discovery of a bacterium that could incorporate arsenic into its DNA came in for quite a bit of criticism this week; in fact, it looks like the initial publicity about the discovery ("an arsenic-based life form!") was mostly hype. Carl Zimmer has a great ...

Biology, Mono Lake, NASA, Biochemistry, Extraterrestrial Life

New Arsenic-Based Life Form Discovered in Mono Lake

Thu, Dec 2, 2010 at 1:31 pm PST

NASA scientist Felisa Wolfe Simon and her team today announced an astonishing discovery, in the poisonous waters of California's Mono Lake: a new type of bacteria that does not share the basic biological building blocks of any other organism on Earth. The new life form, dubbed GFAJ-1, has a biochemistry ...

Biology, Mono Lake, NASA, Biochemistry, Extraterrestrial Life