Signs of Liquid Water Found on Surface of Mars, Study Says
<i>R.S.L.s are treated as special regions that NASA’s current robotic explorers are barred from because the rovers were not thoroughly sterilized</i><p>We're not going to sterilize our research equipment going to Mars and we're not going to search likely sites where we could find life because we don't want to contaminate them.  And yet, looking for signs of life native to Mars (or even water which might support life) is the top reason we're there, judging by the headlines.  Seems like someone in NASA needs to work out this conflict.