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Published online 26 January 2005 | Nature | doi:10.1038/news050124-10

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Internet project forecasts global warming

Biggest-ever climate simulation warns temperatures may rise by 11 ºC.

Michael Hopkin

The greenhouse effect could be far more severe than experts had previously predicted, according to results from the world's biggest climate-modelling study. In the worst-case scenario, doubling carbon-dioxide levels compared with pre-industrial times increases global temperatures by an average of more than 11 ºC.

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