The world would have to give up only one year's economic growth over the next four decades to reduce carbon emissions sufficiently to stave off the threat of global warming, a report says today.
Consultants at PricewaterhouseCoopers offer a "green growth plus" strategy, combining energy efficiency, greater use of renewables and carbon capture to cut emissions by 60% by 2050 from the level reached by doing nothing. Nuclear energy, it says, can play a role, but it is not crucial.
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PwC envisages the Group of Seven leading economies taking the initiative, cutting their emissions by about half by 2050, while the fast-growing E7 countries - China, India, Brazil, Russia, Mexico, Indonesia and Turkey - could still increase their emissions by 30% over the period. "If this is to be achieved it will take further concerted action by governments, businesses and individuals over a broad range of measures to boost energy efficiency, adopt a greener fuel mix and introduce carbon capture and storage technologies in power plants and other major industrial facilities," Mr Hawksworth said.
The report says a combination of all these measures will be necessary to stabilise global CO2 levels at 450 parts per million, the figure scientific opinion judges to be broadly acceptable. The PwC projections see China overtaking the United States as the world's biggest emitter of CO2 by 2010 while total E7 emissions would be more than double G7 emissions by 2050, with the "big three" - China, the US and India - accounting for just over half, up from 45% today.
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http://environment.guardian.co.uk/climatechange/story/0,,1883753,00.html