Alien Life? NASA-Funded Study Questioned

Carl Sagan famously said, "Extraordinary claims require extraordinary evidence." So you could have predicted that when Felisa Wolfe-Simon and her team made an extraordinary claim -- that they had found a bacterium in a California lake that could be made to thrive on arsenic -- a lot of smart scientists would question her evidence. It has been a week now since Wolfe-Simon published her findings in the journal Science. The paper, say scientists, is important -- if its conclusions are accurate --...Full Story
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