This is silly politics - all argument and no reason.  Every time I say this around people who think of themselves as conservative, I am lauded (" I don't know what you just said but I agree with your direction).   Every time I say it around those who lean the other way, I am berated, ("you're obviously dumb...")  I used to get the same ("you don't believe") from the "Peak Oil," bunch.   Where'd they go?  We can be 100% factually sure that the globe's atmosphere is warming.  Science can give you several dozen reasons for it.  No belief needed.  Humans are contributing to it and might help by doing things differently. But there are many real threats and probable causes and cures.  Anything we choose as policy has to compete with a thousand times that number of options to address population. disease, aging, medical care, violence, bigotry, decay in law, infrastructure collapse.  WE understand the competing concerns and fixes.  They will get the first priority.  It is just that way.