Conspiracy theorists are often the subject of scorn or mockery; rejected and ridiculed by the rest of us, they hide away on internet chat forums where they blather on about the collapse of 7 World Trade Center, the rise of the Illuminati or the omnipresence of Mossad. Not the climate-change deniers. Unlike Israel's intelligence agency, they really do seem to be omnipresent these days. Indeed, unlike the Illuminati, they even control national governments. - Halil

For instance, Australia's new prime minister, Tony Abbott, has called the science on climate change "absolute crap" and already abolished the country's Climate Commission. In 2012, Mitt Romney, the Republican nominee for the most important job in the world, was of the view that "we don't know what's causing climate change on this planet". Here in the UK, the Environment Secretary, Owen Paterson, a Conservative, is, in the words of the Financial Times, a "known climate change sceptic". So, too, is a Conservative member of the Commons energy and climate change committee, Peter Lilley. - Halil

It's all about money! Why else would they deny it? - Halil