Nasa's Curiosity rover finds water below surface of Mars
Source: The Guardian
Mars has liquid water just below its surface, according to new measurements by Nasa’s Curiosity rover.
Until now, scientists had thought that conditions on the red planet were too cold and arid for liquid water to exist, although there were known to be deposits of ice.
Prof Andrew Coates, head of planetary science at the Mullard Space, said: “The evidence so far is that any water would be in the form of permafrost. It’s the first time we’ve had evidence of liquid water there now.”
The latest findings suggest that Martian soil is damp with liquid brine, due to the presence of a salt that significantly lowers the freezing point of water. When mixed with calcium perchlorate liquid water can exist down to around -70C, and the salt also soaks up water vapour from the atmosphere.
Read more: http://www.theguardian.com/science/2015/apr/13/nasas-curiosity-rover-finds-water-below-surface-of-mars
= new reply since forum marked as read
Response to brooklynite (Original post)
I crack me up. 
Mars distinct polar ice caps, but Mars also has belts of glaciers at its central latitudes -- between the blue lines, in both the southern and northern hemispheres. A thick layer of dust covers the glaciers, so they appear as the surface of the ground, but radar measurements show that there are glaciers composed of frozen water underneath the dust
"We have looked at radar measurements spanning ten years back in time to see how thick the ice is and how it behaves. A glacier is after all a big chunk of ice and it flows and gets a form that tells us something about how soft it is. We then compared this with how glaciers on Earth behave and from that we have been able to make models for the ice flow," explains Nanna Bjørnholt Karlsson, a postdoc at the Centre for Ice and Climate at the Niels Bohr Institute at the University of Copenhagen.
"We have calculated that the ice in the glaciers is equivalent to over 150 billion cubic meters of ice -- that much ice could cover the entire surface of Mars with 1.1 meters of ice. The ice at the mid-latitudes is therefore an important part of Mars' water reservoir," explains Nanna Bjørnholt Karlss
http://www.sciencedaily.com/releases/2015/04/150408102701.htm
