Some conservatives believe such things in good faith, in the sense that they
have rationalized away evidence to the contrary and sincerely think they are
right. But others lack even the weak defense of confirmation bias. Some years
ago the now-defunct Global Climate Coalition, an industry-funded group, publicly
insisted that "the role of greenhouse gases in climate change is not well
understood"—even though a report for its own internal consumption conceded that
"the scientific basis for the Greenhouse Effect and the potential impact of
human emissions … on climate is well established and cannot be denied."