Darned Martian Republicans

Evan Coyne Maloney notes the research being done by the Mars Global Surveyor spacecraft. NASA scientists have determined that there has been significant, gradual climate change on Mars. Scientists have also suggested the same for Earth. Yet, there is nothing that suggests that Mars produces greenhouse gases in large quantities. So, why is it that Mars is warming? I think we should take a closer look at Evan's suggestion.

Increased solar activity.

Though I suspect that Republicans would somehow receive the blame there too.