There are some OP, that even when clubbed over the head with the evidence, will never believe life once existed on Mars.
Just to expand on that thought, here is something to chew over; whether it's true or not I cannot say, but would entertain the possibility that it is true.
[link to www.rense.com
The Martian moon Phobos, generally accepted as a celestial body, actually may be an artificial satellite launched long ago by an advanced Martian race, according to Dr. S. Fred Singer, special advisor to President Eisenhower on space developments. No mention was made of the other Mars moon, Deimos.
**** In light of this article, there was an interesting assessment of Mars given during a space briefing presented during an Eisenhower cabinet meeting. The briefing, by Eisenhower Science Advisor Dr. James Killian, was given March 14, 1958 -- "Mars - Much more exciting. Conditions more similar to earth -- Undoubtedly some form of life, although probably not ones which we would recognize." (more at link above)
[link to www.examiner.com
Independent Mars colony recruits Andrew D. Basiago and Laura Magdalene Eisenhower have confirmed the existence of a secret human survival colony on Mars in a joint appearance on Exopolitics Radio with Alfred Lambremont Webre.
Mr. Basiago, 48, a Cambridge-educated lawyer who practices law in Washington State, was a child participant in the DARPA time travel program Project Pegasus (1968-72) and later teleported to a U.S. base on Mars twice in 1981.Ms. Eisenhower, 36, the great-granddaughter of U.S. President Dwight D. Eisenhower, was the subject of a sophisticated attempt to recruit her into the secret Mars colony in 2006 that she broke free from after resisting its deeply rooted manipulations and chose to live out her destiny on Earth
They described how the secret Mars colony is funded by black budget military and intelligence sources as a survival mechanism for the human genome in the event that solar flares, nuclear war, or some other cataclysm ends human life on Earth.