Does David Roberts not have access to the Internet? He suggests that *only* American movement conservatives have figured out the global warming hoax

The right’s climate denialism is part of something much larger | David "Climate Nuremberg" Roberts - Grist

If you read RL Miller's post on "climate zombies" you know that open climate denialism is back in vogue in the GOP. However muted denialism may have gotten in the late 2000s, it has come roaring back -- like everything reactionary -- with the economic downturn.
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For the most part the American public's feelings on climate change are shallow, sloshing around with the economic and political tides. When people are feeling safer and more prosperous, climate scientists will magically become more persuasive.

As for the professional skeptics and culture warriors, there's little point hashing out the same arguments with them again and again. I have long since abandoned it. Many people do it well and G*d bless them but I've had my fill of sunspots and medieval warming periods and Pacific Decadal Oscillations. Ideological trench warfare is wearisome and there are many other issues in dire need of attention, principally how we're going to respond to climate change. That's a conversation that engages people outside the armed camps.
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The conservative movement in America has created a self-contained, hermetically sealed epistemological reality -- a closed-loop system of cable news, talk radio, and email forwards -- designed not just as a source of alternative facts but as an identity. That's why when you question climate skepticism you catch hell. You're messing with who people are.

Consider what the Limbaugh/Morano crowd is saying about climate: not only that that the world's scientists and scientific institutions are systematically wrong, but that they are purposefully perpetrating a deception. Virtually all the world's governments, scientific academies, and media are either in on it or duped by it. The only ones who have pierced the veil and seen the truth are American movement conservatives, the ones who found death panels in the healthcare bill.