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energy efficiency

Invention special: Green technology

Technology

Invention special: Green technology

This week's new patent applications aim to make the world a cleaner place: from electricity generation by osmosis, to crops that refine biofuels, and nod-powered headsets

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Earth

Fuel thinner turns diesel cars into greener machines

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Earth

Climate change: how Obama and McCain compare

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US House lifts 27-year ban on coastal drilling

Earth

US House lifts 27-year ban on coastal drilling

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Mean machines go green

Earth

Mean machines go green

Features

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Earth

Editorial: A helping hand for clean technologies

Opinion

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Earth

Invention: Oil-sands digester

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New bug ferments green fuel on the cheap

Earth

New bug ferments green fuel on the cheap

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Earth

International nuclear rules bent for India deal

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'Formula Zero' kart race could drive fuel cell technology

Technology

'Formula Zero' kart race could drive fuel cell technology

Go-karts powered by hydrogen fuel cells compete in the first 'Formula Zero' race, which may one day be a green alternative to 'Formula 1' races

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Earth

Offshore oil drilling in the US: what's at stake?

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Earth

Green fuel for the airline industry

Features

Earth

Virgin rainforest targeted for oil drilling

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Earth

80% of British biofuels are unsustainable

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