Char, you are ignoring the facts put right in front of you. IF there is warming going on on Mars, Saturn and Io (Jupiter and Venus too, from what I've read), then it points, through that evidence, to a solar system wide warming, not just a warming on Earth. There is something either in the sun, or something extra-solar causing this. Something that is not man made. Hell, it could be dark matter causing all of this. But that's a conjecture.