Even the most drastic greenhouse gas cuts currently being discussed stand little chance of limiting global warming to safe levels, studies by scientists in Oxford and Germany have found.
Scientists have worked out for the first time the “carbon budget” – the total such gases the world can emit without risking a catastrophic “tipping point” of warming. The studies put this budget at about 1,000bn tonnes of carbon.
This means that less than a quarter of the world's proven and economically recoverable fossil fuel re- serves can be burnt between now and 2050 to avoid a jump of more than two degrees celsius above pre- industrial levels – widely regarded by scientists as the limit of safety.
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