Good post, my main concern in this study is that they seem to ignore the recent announcement that Mars is experiencing warming as well.
As a reasonably informed poster, don't you agree that it is ludicrous not to examine the temperature effects on other planets (especially our nearest neighbor) when trying to asses what contributes to global warming?
Mars in this case would appear to represent a reasonable 'control' subject - where human induced warming is minimal or non-existent? (I say minimal because those Mars rovers sure resembled SUV's, and God knows those are just evil global warming contributors).
explains what's happening on Mars.