That is indeed the bottom line. Does an increase in sunspot activity increase the incoming energy? Apparently. Does an increase in CO2 in the atmosphere decrease the heat lost to space? Theoretically. Are these two processes independent? Who knows? Ask why Mars and Venus are the temperatures they are -- no human activity there (well, not much) to corrupt the data.
Right now I'm happy with sunspot activity explaining the bulk of historic temperature change, and increasing CO2 as cause for caution, if not alarm, going forward. Believing that global warming is an excuse for repression of 3rd-world growth is somewhat of a stretch for me. Wish there were more time to devote to resolving the issue to my satisfaction, but the truth is it won't matter to me in the end, unless the GW extremists are right...





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