Microbiologist brings NASA down to Earth

... NASA's shameful analysis of the alleged bacteria in the Mars meteorite made me very suspicious of their microbiology, an attitude that's only strengthened by my reading of this paper.  Basically, it don't present ANY convincing evidence that arsenic has been incorporated into DNA (or any other biological molecule). ...

... If this data was presented by a PhD student at their committee meeting, I'd send them back to the bench to do more cleanup and controls. ...

From this blog post by Dr Rosie Redfield (who runs a microbiology research lab at the University of British Columbia).

Update on Mon 2010-12-06 by Tristram Brelstaff

Chemist Alex Bradley raises more problems with the NASA claim here.