I AM NOT TAKING SIDES.
1. People look back and see that the claims (at least in media) have been over the top. According to Kyoto we are past the point of no return. So why bother.
2. (and more important) people are far more concerned right now about the here and now. Real unemployment over 10%. Devalue of money. Price of gas, food, housing, clothing and everything else people need. People are far more concerned with kitchen table issues right now. People are worried about the here and now not about 50 years from now or even 3 years from now.
Two Analogies.
"I must study politics and war that my sons may have liberty to study mathematics and philosophy. My sons ought to study mathematics and philosophy, geography, natural history, naval architecture, navigation, commerce, and agriculture, in order to give their children a right to study painting, poetry, music, architecture, statuary, tapestry, and porcelain." -- John Adams.
Right now we are back at the level of politics and war. (Not the most perfect analogy but it will do for now.) And the GW folks wants people to study painting, poetry, music, architecture, and the rest. Just not going to happen.
OR to place this on the Maslow pyramid. People are worried about food, water, shelter (basic needs) for the future and for now or at least the safety needs. And the GW people want self-actualization or at least the esteem needs. Just not going to happen.