Universal warming?

This is frankly hilarious. After finding out recently that it is not carbon emissions that cause global warming but global warming that causes carbon emissions, we now discover (via Instapundit) that there is warming on Mars:

And for three Mars summers in a row, deposits of frozen carbon dioxide near Mars' south pole have shrunk from the previous year's size, suggesting a climate change in progress.

Don't you just hate those disrespectful Martians driving around in their SUVs? Well maybe not - aren't the Americans at fault, as usual?
At any rate it is a further indication that at least part of the trend is not caused by humans.