Last week FOX News did a story on recent findings thanks to the Hubble Telescope. Scientists DO believe that there was and may still be, some form of life on Mars, and not millions of years ago either,but much more recently. Check it out on Foxnews.com in the archives !!
As in single cell bacteria, yes. The Viking space vehicle sent photos down to earth from mars in 1976, showing volcanos, craters, and river formations. We had found meteorites in Antarctica that came from Mars and tested the components within the rocks and fossilized bacteria life forms that can only be developed by water, as all life forms.