Speaking of ice on Mars, the folks with the Mars Reconnaissance Orbiter made a cool video talking about new low-latitude craters exposing water ice beneath the Martian surface: You can watch more HiRISE videos at the MRO video gallery. Lots of cool stuff there!
Related posts: Mars is SublimeWater on the Moon...? Yup. It's real.
Tip o' the dry ice crater to the HiRISE Twitter feed.
