Water has always existed on Mars in the form of Polar Ice Caps ._.
But liquid water? Wow. Carbon-based lifeform precursors, anyone? It's totally possible, if we consider they have the same physiological composition as we do.
Or...
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Yes, liquid water. I expect us to find bacteria before 2014. I'm really excited! =D=D=D
Yes, liquid water. I expect us to find bacteria before 2014. I'm really excited! =D=D=D