Going back to this climate change debate, one of the claims I see by some of the people that don't believe mankind has polluted and don't agree that man has changed the Earth's environment, their say in the debate is to claim global warming is due to the Sun.

Now it would be great to see this climate change concluded and solved, but is it really all due to the Sun ? Some on the far right have been accused of distorting facts and selling out to the fossil fuel companies. On the other far left and radical environmentalist side of the coin we sometimes see doomsday scenarios painting a picture of how the Earth will be soon destroyed in a global warming apocalypse. However the fact remains that man has polluted our planet and the majority of well respected scientists think that man has played some kind of role in this climate change.

One of the claims that keeps popping up again and again is that global warming is happening on Mars. One of the anti-CO2 claims, basically says Mars is mirroring what has been happening on Earth and since nobody lives on Mars (unless you listen to crackpots like Hoagland) and Mars is not producing vast quantities of CO2 by geological means then Earth's warming can also be explained by some Solar cycle ?

The trouble I find with this claim is that when I dig any deeper to look for the Mars warming facts and evidence of the Sun causing global warming on the planets in our solar system, all I find is a quote of a measurement made by Viking-1 on Mars and MGS orbiter pics of a smaller southern polar cap. Is there any website or paper that finally confirms, debunks or busts this claim ?