Global warming might be twice as catastrophic as previously thought, flooding settlements on the British coast and turning the interior into an unrecognisable tropical landscape, the world's biggest study of climate change shows.
Researchers from some of Britain's leading universities used computer modelling to predict that under the "worst-case" scenario, London would be under water and winters banished to history as average temperatures in the UK soar up to 20C higher than at present.
Globally, average temperatures could reach 11C greater than today, double the rise predicted by the Intergovernmental Panel on Climate Change, the international body set up to investigate global warming. Such high temperatures would melt most of the polar icecaps and mountain glaciers, raising sea levels by more than 20ft. A report this week in The Independent predicted a 2C temperature rise would lead to irreversible changes in the climate.
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