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Yet another reason not to waste time trying to copy the late Farrah Fawcett's inimitable trademark tousled tresses: hair sprays have hair-raising emissions to match, according to new research by the Netherlands Environmental Assessment Agency.

In fact, contain a greenhouse gas that can be 14,800 times more effective at warming the climate than carbon dioxide, says Guus Velders, the lead author of the study.

If that's not enough to make you start pulling your hair out (a novel form of negative feedback, surely?), listen to this.

By 2050, hydrofluorocarbons (or HFCs, as they're known to their friends) could account for up to a fifth of global warming.

The irony is that , writes Jonathon Leake over at the Times. They're the ones who convinced the world to get rid of ozone-destroying CFC gases in the 1980s and replace them with the 'greener' option, HFCs. Listen out for the collective "d'oh", right about... now.

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