The "biggest ever" pumping operation is under way on the flooded Somerset Moors and Levels, the Environment Agency says.

BBC: Floodwater being pumped

By 2013 one AP1000 will be pumping out electricity and 20 to 30 will be under construction, mostly in China.

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The process involves pumping water containing small percentages of other materials into the porous shale under pressure to hydraulically fracture it and release the trapped oil and gas.

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We variously talked about fitting bicycle valves to the caps and pumping them up, building a hyperbaric chamber to fill the bottles under pressure and finally liquid nitrogen.

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President Bush exacerbated the problem, further pumping up the housing bubble with his cheap dollar monetary policy, under the illogical, outdated, Keynesian thinking that a cheap dollar expands the economy by promoting exports.

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Under the process of fracking, oil or gas is extracted from shale rock by pumping a mixture of sand, water and chemicals into the rock at high pressure.

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