I should mention that something I said before, that CFCs do not participate in global warming was wrong. CFCs are greenhouse gases in addition to depleting the ozone layer. However their greenhouse effect is smaller than that of CO2 and Methane and thankfully CFCs are regulated now and in decrease.

Soot More Culpable in Climate Warming Than Expected

Quote from the end (emphasis added):
Quote:
Hansen notes that greenhouse gases are still the primary cause of climate warming during the past century and will continue to be the predominant agent of warming in the future. The good news is that soot emissions may be more easily lowered than the greenhouse gas variety. "Technology is within reach that could greatly reduce soot," the researchers write, "restoring snow albedo to near-pristine values, while having multiple other benefits for climate, human health, agricultural productivity, and environmental esthetics."

This is a good place to note another possible problem with global warming: a runaway greenhouse effect due to melting of the polar ice caps. Since the white ice/snow reflect solar light (high albedo) if they go missing more heat will be absorbed and warming will get even worse.
But weather is a very complicated system, and some will say that it won't be a problem since a larger cloud cover due to increased evaporation will reduce warming, while others will point out that it will be worse from the same cause since water vapor also has a greenhouse effect.

The jury will still be out in much of the specifics and predicted scenarios may be off, but one thing remains certain for me: there is a warming trend and we can't afford to find out that it isn't self-correcting nor to confirm a catastrophic runaway greenhouse effect scenario by living through it.