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energy efficiency

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Republicans won't be nudged into cutting home energy

Tell an electricity-guzzling US household that they use more than the neighbours and they'll probably cut back – unless they're conservatives

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Green machine: Generating more light than heat

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Green machine: Generating more light than heat

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Deepwater Horizon: scrutiny falls on blowout preventer

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Deepwater Horizon: scrutiny falls on blowout preventer

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Oil slick fight continues with robots and fire

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Oil slick fight continues with robots and fire

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Green machine: Cheaper home power from sunlight

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Green machine: Cheaper home power from sunlight

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Green machine: Power from the people

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Green machine: Power from the people

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Technology

Carbon flakes brush up for cheap solar cells

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Green machine: Rethinking internal combustion engines

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Green machine: Rethinking internal combustion engines

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Technology

World's largest laser blasted over fusion plan

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Molten metal batteries to be clean energy reservoirs

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Molten metal batteries to be clean energy reservoirs

Cheap, powerful smelter-like gadgets could make electricity grids more efficient and solve the problems of renewable power

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Skip the hard cell: Flexible solar power is on its way

Features

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Innovation: Only mind games will make us save power

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Search engines' dirty secret

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Texas oil companies will soon be locking away carbon

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