Life on Mars is a category devoted to speculative or scientific investigation of the possibility of life on Mars.
Life on Mars is a category devoted to scientific investigation of the possibility of life on Mars. Pretty dry stuff, for the most part.

If you are submitting a site that contends that the government is covering up obvious evidence of life on Mars, or a site that presents "proof" of intelligent life on Mars, please submit to the UFO Conspiracies page.