The climate change catechism

Fraser Nelson has a piece in the current Spectator which usefully delineates four different propositions on climate change:

“The truth about global warming is that the debate has many levels that can broadly be divided into four categories: 1) that global warming is happening; 2) that mankind is largely responsible; 3) that we are reaching a crunch point; and 4) that only a crash course of carbon reduction can avert it. All too often, the British press report people who believe — or reject — all four parts of this catechism. The debate is thus caricatured: shades of grey are airbrushed out.”

Gordon Brown implicitly lumps all these together when he condemns “behind-the-times, anti-science, flat-earth climate sceptics”.