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Climate change will cost a billion people their homes, says report

November 29, 2010

From The Guardian

By Robin McKie

Devastating changes to sea levels, rainfall, water supplies, weather systems and crop yields are increasingly likely before the end of the century, scientists will warn tomorrow.

A special report, to be released at the start of climate negotiations in Cancún, Mexico, will reveal that up to a billion people face losing their homes in the next 90 years because of failures to agree curbs on carbon emissions.

Up to three billion people could lose access to clean water supplies because global temperatures cannot now be stopped from rising by 4C.

“The main message is that the closer we get to a four-degree rise, the harder it will be to deal with the consequences,” said Dr Mark New, a climate expert at Oxford University, who organised a recent conference entitled “Four Degrees and Beyond” on behalf of the Tyndall Centre for Climate Change Research. Tomorrow the papers from the meeting will be published to coincide with the start of the Cancún climate talks.

A key feature of these papers is that they assume that even if global carbon emission curbs were to be agreed in the future, these would be insufficient to limit global temperature rises to 2C this century – the maximum temperature rise agreed by politicians as acceptable. “To have a realistic chance of doing that, the world would have to get carbon emissions to peak within 15 years and then follow this up with a massive decarbonisation of society,” said Dr Chris Huntingford, of the Centre for Ecology and Hydrology in Oxfordshire.

From The Guardian

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