Nasa studies show that Mars polar caps are melting I guess that is due to man made global warming as well and nothing to do with the influence of the sun? Aivars Lode
Mars has gotten so big in recent weeks that even a backyard telescope will show details on the planet's surface: dust clouds, volcanic terrains, impact basins. Best of all is the south polar cap. Made of frozen CO2 or "dry ice," it reflects more sunlight than any other part of the planet. The southern hemisphere of Mars is tipped toward Earth and the bright cap is remarkably easy to see.