When it comes to climate change denial, not all human beings are created equal. As a recent study shows, conservative white males are less likely to believe in climate change. "It's not surprising," said Aaron McCright, sociology professor at Michigan State University, who is a white male himself. But anecdotal evidence is not scientific, he said. "You really don't know what's going on until you crunch the numbers and find out." Besides the trend amongst skeptics, the study also found that conservative white men who self-report a high understanding of global warming -- dubbed "confident" conservative males -- are even...