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energy efficiency

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Earth

Fuel thinner turns diesel cars into greener machines

A cheap device that makes oily diesel flow more easily gives a less-polluting burn, as well as improved range in some models

News

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Earth

Climate change: how Obama and McCain compare

News

US House lifts 27-year ban on coastal drilling

Earth

US House lifts 27-year ban on coastal drilling

News

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

News

New bug ferments green fuel on the cheap

Earth

New bug ferments green fuel on the cheap

News

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Earth

International nuclear rules bent for India deal

News

'Formula Zero' kart race could drive fuel cell technology

Technology

'Formula Zero' kart race could drive fuel cell technology

News

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

Earth

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

The Obama administration has proposed opening huge areas off US coasts to marine oil and natural gas drilling

News

Earth

Green fuel for the airline industry

Features

Earth

Virgin rainforest targeted for oil drilling

News

Earth

80% of British biofuels are unsustainable

News

Earth

How to turn gas guzzlers into green machines

News

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