NASA’s JPL division has an interesting article on thawing dry ice (frozen CO2) near the polar regions of Mars.
Aside from its being interesting, I only bring it up as it reminds me of the faux skeptic talking point about Mars warming, ergo the sun drives warming here on earth. It is about as far from a truly skeptical argument one could imagine as it rests (or at least it did when it originated) on the flimsiest of evidence that there is climate change on Mars at all. A truly skeptical approach would not make the leap from two photos of one spot to a global trend. Even if you establish the existence of a warming trend at all, attribution to changes in insolation is not a given. In fact, the apparent warming was thought to be due to Mars’ own orbital variations, similar to Earth’s Milankovich cycles.
And further, if Mars was warming and it was due to solar factors this does not in anyway make the Earth’s greenhouse effect suddenly disappear! So, not too much skepticism going on in the heads of people spouting that one….
Meanwhile, back on not Earth, the video below is an interesting summary of the thawing process NASA’s Mars Reconnaissance Orbiter has been observing over the last few years:
Embedded video from