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Earth

The next best thing to oil

The energy from concentrating solar power is already being used to generate hydrogen – it's a short step from there to liquid hydrocarbons

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Innovation: Reinventing urban wind power

Earth

Innovation: Reinventing urban wind power

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Earth

Which oil-mopping technology will win $1.4m X prize?

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Earth

E. coli engineered to make convenient 'drop-in' biofuel

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US food waste worth more than offshore drilling

Earth

US food waste worth more than offshore drilling

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Green machine: A salty solution for power generation

Earth

Green machine: A salty solution for power generation

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Technology

Alternative nuclear fuel is surprisingly reactive

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Green machine: A new push for pond scum power

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Green machine: A new push for pond scum power

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Stabilisers will let deep-sea wind turbines stand tall

Earth

Stabilisers will let deep-sea wind turbines stand tall

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Earth

Hot electrons could double solar cell efficiency

Quantum dots could boost the amount of electricity produced by silicon solar cells, by harnessing the energy from hot electrons

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Space

Mystery glitch? Blame it on the sun

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Technology

Green machine: Bacteria will keep CO₂ safely buried

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Earth

Second well on the way to cap Deepwater Horizon

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Earth

Green machine: Recycled batteries boost electric cars

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