They are much more efficient at converting plant matter into edible tablefare than livestock, so there is an environmental benefit as well.

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Boeing bought the building in 1965 when Chinook production began, and currently is in the midst of a costly effort to make the plant more efficient.

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Mr Woolsey, who backed the Iraq war, is on the advisory board of the Institute for the Analysis of Global Security, which argues for subsidies to make cars more fuel-efficient and for plant-based alternatives to petrol.

ECONOMIST: Doing it their way

Enterprises are being pressed to change over from coal to cleaner-burning natural gas and methane, and to be more energy-efficient by modernizing their plant equipment in the switch.

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There's even a "white tag" market: When I install a more efficient light bulb, I can sell that efficiency gain to the fossil fuel power plant, just as if it's a green tag.

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Mr Ghosn hopes to cut costs at Nissan's British plant, already Europe's most efficient, by 30%, but thinks more pain is inevitable.

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