So what/if/Mars is warming

Irrelevant Comment: “Mars is warming too, which proves that humans aren't causing global warming.”

Claim

This is one form of the global warming is caused by increased solar radiation myth. It is basically the same as the Pluto is warming irrelevancy; they are often mentioned together.

Reality

• Mars's climate is primarily driven by dust and albedo, not solar variations.
• We know the sun is not heating up all the planets in our solar system because we can accurately measure the sun's output here on Earth, and it hasn't been increasing as other planets have warmed.

If anything, the lack of correlation between extraterrestrial planetary temperature changes and solar output changes emphasizes the importance of local changes in long-term planetary climate trends – providing further support to the idea that doubling atmospheric concentrations of greenhouse gases could result in significant climate change.

Links

• Skeptical Science: Global warming on Mars, ice caps melting
• Wikipedia: Mars