Page last updated at 21:49 GMT, Monday, 28 September 2009 22:49 UK

Met Office ups warming forecast

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In a dramatic acceleration of forecasts for global warming, UK scientists say the global average temperature could rise by 4C (7.2F) as early as 2060.

The Met Office study used projections of fossil fuel use that reflect the trend seen over the last 20 years.

The BBC's Environment correspondent, David Shukman, reports.

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