US scientists with academic tenure and government standing are among the least dependent, most secure human beings on this planet. And that is one of the key factors that has allowed them to research and publish about AGW, in defiance of the Party line so far - although Trump's election is bringing a great deal more pressure to bear. You can compare their public stances with those of corporate researchers in the fossil fuel industry, whose findings on AGW were suppressed and are only now becoming public through leaks and secondhand recountings. These unfortunates were held to the Party line for decades - as has happened in other capitalist corporation dominated fields of research in which physical reality conflicted with the Party line (leaded gas, trans fats, ozone destruction, artificial sweeteners, nuclear power, etc). And once primed to dismiss them as biased in a particular way, you are unable to register physical reality as discovered and reported by them. An example of the crippling effects of an absurd denial.