Mars' South Pole and Water

This article sums up what we now know about the Martian south pole. The layers of ice have proven deeper than expected indicating that Mars has more water than previously thought. Scientists mapped the ice using radar, so they are very confident of the results. They also now have a pretty good idea of what the surface below the ice is like. All in all, the mission has added a bit more data to the puzzle of life on Mars. Now we know for sure where a lot of the water went when things got cooler. We're just not yet sure what the water was doing before.