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Green machine: Rethinking internal combustion engines

Earth

Green machine: Rethinking internal combustion engines

It may never be loved by environmentalists, but the internal combustion engine could improve its reputation as polluter-in-chief – here's how

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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

Earth

Molten metal batteries to be clean energy reservoirs

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

Earth

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

Features

Innovation: Only mind games will make us save power

Earth

Innovation: Only mind games will make us save power

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Search engines' dirty secret

Earth

Search engines' dirty secret

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Drilling deep under the US to dispose of nuclear waste

Earth

Drilling deep under the US to dispose of nuclear waste

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Texas oil companies will soon be locking away carbon

Earth

Texas oil companies will soon be locking away carbon

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Which is the greenest US city of all?

Earth

Which is the greenest US city of all?

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Tidal power? No thanks

Earth

Tidal power? No thanks

The north of Scotland has been described as the Saudi Arabia of marine power – but there isn't much energy to be had from any sea, says Hans van Haren

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Earth

Insulation nation: Cutting the cost of cosy

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Earth

Oceanology: The offshore engineering adventure

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Earth

Energy-efficient homes make householders complacent

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Life

Algae's solar electrons hijacked to steal power

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