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fossil fuels

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Earth

Chemical breakthrough turns sawdust into biofuel

Lignin makes up a third of the dry mass of wood, but nobody knew how to convert it into ethanol - until now

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Who needs coal when you can mine Earth's deep heat?

Earth

Who needs coal when you can mine Earth's deep heat?

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Earth

Nanotubes bring artificial photosynthesis a step nearer

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Earth

Organic dye lets window panes harvest the Sun

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Earth

Contaminated US site faces 'catastrophic' nuclear leak

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Earth

Wind power sails ahead in UK as US solar plans freeze

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Cold war 'caterpillar drive' could harvest sea power

Earth

Cold war 'caterpillar drive' could harvest sea power

Features

Oil: The final warning

Earth

Oil: The final warning

Features

Comment: Kicking the oil habit

Earth

Comment: Kicking the oil habit

Comment

Time to go ahead with Nevada nuclear dump?

Earth

Time to go ahead with Nevada nuclear dump?

The scientific debate over the site's suitability has run its course and it's time to forge ahead with a test facility, say two senior geologists

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Earth

New technologies promise biofuel 'plan B'

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Earth

Have we underestimated total oil reserves?

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Technology

US considers nuclear-powered assault ships

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Earth

Algae oil promises truly green fuel

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