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A group of researchers have failed to reproduce the earlier NASA result that suggested arsenic-based life was possible.
One interesting aspect of this story is that the research results were discussed openly, with regular updates as the work was on-going, on one of the scientists blogs.
Redfield and her collaborators hope to submit their work to Science by the end of the month. She says that if Science refuses to publish the work because it has been discussed on blogs, it will become an important test case for open science.