Mars Ski Report: Snow is Hard, Dense and Disappearing

Mars would make a lousy host for the Winter Olympics. Yes, there’s the lack of air to consider. But more important, Martian snow turns out to be rock hard. Worse, it is melting away at an alarming rate. In fact, Mars may be in the midst of a period of profound climate change, according to a new study that shows dramatic year-to-year losses of snow at the south pole.