Human beings always seem to have to wait until after disaster before we do anything. Will the GOP deny global warming even after the Statue of Liberty is under water. I may already be too late to do anything.
to react to the tiger leaping from the bush, or the rabbit about to escape from spear range. As a species we only know how to react to threats that are literally right in our face. Long range planning is a learned behavior, it's not instinctual. And even then, short range problems overwhelm the coping mechanism, so when the gas tank is getting low and it's still three days till payday, that's way more important to us than something as abstract and invisible as global warming.