blocks of icy debris, warmed by the sun, tumble down cliffs of the northern ice cap;
swirling dust devils leave tracks on defrosting dune surfaces in the south;
as polar ice recedes, the surface erodes in scalloped ridges;
during spring in the north, sand dunes emerge from the blanket of frost;
starburst patterns are created as ice warms into gas and expands, creating channels spreading out radially;
when the gas breaks through the ice, it creates plumes and material is carried downwind.-- NYT
At Edge, Rodney Brooks speculates on Life (or not) on Mars. Speaking for myself, I would rather it stayed quiet and beautiful there for at least a while longer.
P.S. 15 Jan: NASA says there could be bugs in the rocks.