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From the shoreline of an ancient salty sea to the bottoms of deep, flood-carved channels, Mars is scarred with geological signs that indicate liquid water once flowed on the its surface.
These findings, combined with the discovery of tiny, spherical "blueberries" and the detection of water ice in the planet's polar ice caps, have led scientists to scour the planet for signs of liquid water in recent years.
The elusive quarry has remained hidden, possibly because it may not exist for more than a fleeting second. Due to Mars' low temperatures and extremely low atmospheric pressure — less than a hundredth that of Earth — pure water evaporates from ice to gas so quickly that it skips the liquid phase.
But now, new research by a team of scientists at the University of Arkansas suggests that liquid water could persist for some time on Mars, so long as it is salty.
IMO, this is yet one more step in the VERY SLOW process of desensatizing the general public to the ultimate disclosure of the existence of ET.