Global Warming... On Mars

Global warming has recently become a great worry for those on Earth. Many scientists have blamed humans for causing global warming. However, recent climate changes on Mars may suggest that global warming is naturally occurring. The 2005 data from NASA's Mars Global Surveyor and Odyssey missions revealed that the CO2 "ice caps" near Mars's south pole had been diminishing for three summers in a row. Scientists believe that solar irradiance is the cause for global warming. Even though, the Earth temperature may be naturally increasing, I believe that humans also contribute to the warming. Even though this is an interesting theory, it is still highly debated.