NPR had a feature a while back about Republicans who secretly believed in Global Warming, and one guy who represented a rural area, saw the damage that was happening because of climate change, saw the threat human caused climate change presented to his constituents, but said the wrong thing despite having his constituents best interests at heart. Essentially the backwater hicks would agree with him that the climate wasn't being kind to them, but they turned on him once he mentioned the trigger word.
Its not like these people are incapable of believing in anything that can't be concretely proven either. They believe in God. I know one guy who also believes aliens have visited the Earth and that the "Men in Black" are real. But this ability to believe in the far-fetched does not guarantee that they would adopt the very likely possibility that we're hurting our own planet with green-house gasses. And once they do believe it, I'm not sure they will care.
They know the damage strip mining can do, and they don't care. They fight regulation of it tooth and nail. They're coming around on fracking, but they're also not going to care. Their line of reasoning is "If you don't like the poisonous water or earth quakes, move. If you can't move, you must not be working hard enough - f_ck you." They deny-human caused Global Warming, but when they come around on it, they won't care. Caring about the planet is for liberals and communists - thus saith the Reagan Religion