Which came first, the chicken or the egg, the methane or the life on Mars; this is the confounding questions of late...methane must mean bio material is degrading, or it simply means we don't know anything for sure.

If you know we are a planet and the twinkling little lights in the sky are the same or similar to the planet we live on, you would have to have had a lobotomy not to think it possible that life could exist on a plant other than Earth.

Now, zoom to present day and all the scientific technological advances; we should be able to determine if Mars was ever able to support life. The truth is, NASA has sent probes up, rovers, spacecraft to circle the red planet and take pictures, spent millions of dollars to answer this very question and as of yet there is no conclusive evidence to support the hypothesis that life did exist on Mars.

If someone were to come to Earth after its terrain and atmosphere failed, don't you think they could figure it out in about, oh...say five minutes. We the people of earth would have left stuff there, like landfills, old buildings that surely would have survived storms, freezing temperatures, sun storms, lava, and the hell that a natural living planet could produce. We still don't know for sure who shot President Kennedy either.

The point is that until we get up there, dig deeper and get conclusive evidence, then the answer to the 'Life on Mars' question has to be approached the Joe Friday way, "Just the facts...". The truth is the facts would tell us and the fact that we don't have any solid facts yet, well that just means Life on Mars shall remain a fiction until sometime in the future. No mystery, just no life that's all. So all the bored people of this planet spend time turning tales and letting their over active imaginations skew their practical senses. Go do something with your life and worry about Mars when the little green men show up.