Originally Posted by raymor

FYI, the other planets (with no humans) are also warming, though not as fast as the earth. Unless mars has martians burning fossil fuels, the sun IS cycling and changing. That accounts for about half of the change measured on earth.

The mars data was measured and compiled by astronomers looking to learn about mars. The earth data was measured and compiled by people paid to "prove" that global warming is an emergency. One would expect their results would be biased toward what their sponsors want. If the measurements were objective, there might be a small difference between earth and mars, or there might be no difference.