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energy efficiency

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Earth

'Smart roofs' can keep you cool and save energy

Why use power-hungry air conditioning when a modified roof and attic space could absorb the Sun's heat and release it again at night?

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Earth

Redesigned petrol engine promises green gains

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Technology

Computers learn to fly kites for renewable energy

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Antarctic pod makes way for green research

Earth

Antarctic pod makes way for green research

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Fossil-fuel hangover may block ice ages

Earth

Fossil-fuel hangover may block ice ages

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Underwater turbines set to generate record power

Earth

Underwater turbines set to generate record power

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Forget biofuels – burn oil and plant forests instead

Earth

Forget biofuels – burn oil and plant forests instead

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Earth

Nations scramble for oil in Arctic

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Can biofuels rescue American prairies?

Earth

Can biofuels rescue American prairies?

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Energy-curbing bill passes Congress

Earth

Energy-curbing bill passes Congress

But the wide-ranging legislation to reduce excess energy use in the US faces a presidential veto

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Earth

Buoys flex artificial muscles for renewable energy

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Earth

Revealed: America's most polluting power plants

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Earth

Flying windmills could harness the jet stream

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Earth

Renewable energy could 'rape' nature

News

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