Carter was critical of the IPCC and believed statements about dangerous human-caused global warming to be unjustified. He was on the research committee of the Institute of Public Affairs, an Australian free-market think tank which promotes climate change denial, and connected with its subsidiary think-tanks. In April 2006, he argued against climate change being "man-made" by asserting that the global average temperature "had stopped" for the eight years since 1998, while the carbon dioxide in the atmosphere increased. Chris Mooney refers to this article as an early example of statistically misleading use of the short period from the exceptionally strong El Niño year of 1998 which had set a temperature record. In 2007, Carter participated in an expert panel discussion after the airing of "The Great Global Warming Swindle" documentary on ABC.