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dark energy

Sun and sand breed Sahara solar power

Earth

Sun and sand breed Sahara solar power

An ambitious new project aims to "breed" solar power plants in the Sahara by exploiting the desert's two most abundant resources

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Cloud lasers: Hunting quantum secrets in the skies

Earth

Cloud lasers: Hunting quantum secrets in the skies

Features

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Earth

Biofuels will up Euro greenhouse emissions

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Earth

Green Machine: Markets hint at 100-year energy gap

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Earth

Green machine: Heat scavengers come in from the cold

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Cold climates no bar to biogas production

Earth

Cold climates no bar to biogas production

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Solar power could crash Germany's grid

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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Technology

Charge your phone with a beach towel

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Space

Out-of-this-world proposal for solar wind power

The world's energy needs could be met 100 billion times over using a satellite to harness the solar wind – but only if we can figure out how to focus

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Technology

Oil company to build longest floating vessel ever

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Technology

Japan to begin drilling for methane in undersea slush

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Technology

Born-again solar cells are more efficient

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Technology

Green machine: Squeezing solar juice from jellyfish

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