A new study by nasa has found the posibility of water on mars. There is no proof, but the have photographic evidence on the environment and landscape changing depending on whether the termepratures are above or below freezing. If there is liquid water on mars there is also a higher chance of there being some kind of life on mars. If there is any kind of life on mars at all, the chances of intelligent life existing somewhere else in the universe on one of the trillions of planets goes up drastically. If two planets right next to each other both support any life at all, the implications are miraculous. 

Here is the CN article:

http://lightyears.blogs.cnn.com/2011/08/04/mars-may-have-salty-water/?hpt=hp_t2