http://lightyears.blogs.cnn.com/2011/08/04/mars-may-have-salty-water/?hpt=hp_t2 Who'd go? "At the equator, summer highs can reach 70 degrees Fahrenheit (about 20 Celsius). But in the middle latitudes, where the observations disclosed Thursday were taken, temperatures range from about 32 degrees F at summer noon to overnight lows of -75 F (-60 C)."
umm...i know i'm a fairly large guy, but that seems a tad small for swell...still pretty cool tho. the patterns in the pics do seem consistent w/ water flow, at least as it's observed here on earth.
If they found this potential liquid flows, then you would think they would be able to find actual water.