Global warming is also occurring on Mars! A study of the ice caps on Mars may show that the red planet is experiencing a warming trend. For decades, it has been thought that the ice caps on Mars were mostly carbon dioxide (dry ice). But today, planetary geologists are starting to think that those caps may be mostly fresh water ice instead.



After keeping a close eye on the dozens of deep, wide pits in the southern Martian ice caps, the Caltech planetary scientists discovered that these pits have been growing larger every year, but they never get any deeper. From this observation, scientists believe that there is a layer of dry ice that is evaporating off of a thicker layer of water ice. Is it the global warming trend happening on Mars that is leading to yearly increases in evaporation?



Via: mos.org