Re: Oh Wow, Man! - Right, is the backcontamination risk now higher?
Marginally. Mars rocks still land on Earth annually with no controls and Martian organisms have still not coevolved with Earthlife. The remote chances of Martian life being hazardous have probably doubled or tripled from nearly 0 to still nearly 0 based on at most a two to threefold increase in the chance life exists on Mars by my nonexpert guess. This is based solely on the fact that the water estimate is simply at the upper end of the previously estimated range (more than 2 & < 3 times the midpoint of the estimated range).
Regards,
Mark