Why don 3 our of 4 Tea Party members think global warming is happening?

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It is hard to respect people who don't think that global warming is taking place, and only a little less hard to respect people who don't think greenhouse gas emissions due to human action are important in that rise.

On the other hand, I think all scientists would say we need to know more about the science of climate change and we need to better explicate the relative importance of the various processes involved in climate change, including those with extraterrestrial sources.