Apparently there is evidence that the surface of Mars has or had the components necessary to support life. I'm not sure about this "has" or "had." It either does or it doesn't - which is it? What about water?
Read more at: http://news.yahoo.com/s/space/20090330/sc_space/mosthabitablezoneonmarsrevealed
Read more at: http://news.yahoo.com/s/space/20090330/sc_space/mosthabitablezoneonmarsrevealed
