The Silicon Valley thought police are at it again. On July 6, geologist Gregory Wrightstone, the current executive director of the CO2 Coalition, announced that he had been banned from LinkedIn, the online employment and professional social networking platform. Wrightstone's "crime" was, apparently, that he posted graphs that show that the life-giving molecule known as carbon dioxide was much more plentiful in Earth's atmosphere in the past.

Climate hysterics believe that carbon dioxide — a molecule essential for life on Earth — is a major culprit in global warming.

Wrightstone announced his banishment from LinkedIn on Twitter on July 6: "It is official. I have been permanently banned from LinkedIn. The last straw apparently was one of the two charts I posted yesterday," Wrightstone wrote.