Kyoto protocol a bunch hot air

Under Kyoto, each government calculates how much carbon dioxide, methane and nitrous oxide its country emits by adding together estimated emissions from individual sources. These so-called "bottom-up" estimates have long been accepted by atmospheric scientists, even though they have never been independently audited.

Now two teams that have monitored concentrations of greenhouse gases in the atmosphere say they have convincing evidence that the figures reported by many countries are wrong, especially for methane. Among the worst offenders are the UK, which may be emitting 92 per cent more methane than it declares under the Kyoto protocol, and France, which may be emitting 47 per cent more.