There is plenty of water on mars, in the form of ice. I agree though that mars colonies would be underground for a long, long time. This article covers some p

There is plenty of water on mars, in the form of ice. I agree though that mars colonies would be underground for a long, long time. This article covers some problems with terraforming Mars: http://www.science20.com/robert_inventor/trouble_with_terraforming_mars-126407 http://www.science20.com/robert_inventor/trouble_with_terraf...