Warming On Mars, Redux: It Ain't The Damn Sun!

Rather, the one degree temperature increase seen on the surface of Mars over the past 30 years can be attributed to a change in the planet's albedo (ability to reflect sunlight):

Research indicates that as the dark areas on Mars [blue in the map above] expand and darken over time, its albedo decreases, and its surface air temperature rise. Large surface areas, some almost twice the size of the continent of Africa (over 34 million square miles), have been observed to darken or brighten by 10 percent or more, which speaks to the magnitude of these global surface changes.

And if your local Denier keeps nattering on about warming on Neptune, or on the moons of Saturn, or wherever, tell them that you have it on good authority that it's getting colder on Yer-Anus.