Can life exist on Mars?

Mars has already from centuries interested people of all cultures because of its colour - red and seemingaly fast movement on the sky.
Scientists say, Mars is too salt to life could exist there. From a analysis of Red Planet's rock fragments, which was washed by water it ensues, that Mars was unusual rich of minerals.
The scientists think that stage of salinity would make impossible rise of life. In their opinion even the most immune bacteriums couldn't survive in that medium. For few latest months stones from Martian plain was exactly explore by American scientists from NASA. From those explorations it ensues, that before few thousands years there was water. Results of today explorations say about that, there couldn't be life even if there was that necessary thing to live - water.