Though there has been a fair amount of evidence that the Earth’s atmosphere is undergoing global warming, the process is slow enough that there are plenty of skeptics, including some very influential people, who argue that it may not be happening at all. Global climate change does occur, however, and sometimes so quickly that you can watch it happening. Just look at our neighbor, Mars: within the last month, the global atmospheric temperature of Mars has increased by approximately 50 degrees Fahrenheit, according to data being received by the Thermal Emission Spectrometer (TES) on NASA’s Mars Global Surveyor spacecraft.