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Earth

Green Machine: Fill up your car with hydrogen beads

A liquid fuel made from hydrogen-packed nano-beads would make it easier to fill up

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Earth

Efficiency could cut world energy use over 70 per cent

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Cooperative cellphone networks could cut energy waste

Technology

Cooperative cellphone networks could cut energy waste

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Christmas trees could make a great green fuel

Earth

Christmas trees could make a great green fuel

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2011 preview: Charge of the electric car

Earth

2011 preview: Charge of the electric car

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Is night falling on classic solar panels?

Earth

Is night falling on classic solar panels?

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Sun and sand breed Sahara solar power

Earth

Sun and sand breed Sahara solar power

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Cloud lasers: Hunting quantum secrets in the skies

Earth

Cloud lasers: Hunting quantum secrets in the skies

Features

Earth

Biofuels will up Euro greenhouse emissions

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Earth

Green Machine: Markets hint at 100-year energy gap

A study of share prices suggests investors don't expect alternative-energy technology to take off until 2140 – a century after we run out of oil

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Earth

Green machine: Heat scavengers come in from the cold

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Earth

Cold climates no bar to biogas production

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Earth

Solar power could crash Germany's grid

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Technology

Work light twice as hard to make cheap solar cells

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