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Algal power not so green after all, yet

Earth

Algal power not so green after all, yet

Algae have been touted as a solution to environmental worries over biofuels, but they may be a long way from providing a truly green option

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Technology

CO₂ in the air could be green fuel feedstock

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World's communications network due an energy diet

Technology

World's communications network due an energy diet

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NASA feels 'plutonium pinch' earlier than expected

Space

NASA feels 'plutonium pinch' earlier than expected

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Earth

Avoiding dangerous warming by 2100 'barely feasible'

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Artificial leaf could make green hydrogen

Earth

Artificial leaf could make green hydrogen

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2009 review: In green tech we must trust

Earth

2009 review: In green tech we must trust

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2010 preview: Automotive X Prize contestants power up

Earth

2010 preview: Automotive X Prize contestants power up

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Plastic bags recycled into nanotubes

Technology

Plastic bags recycled into nanotubes

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Battery lithium could come from geothermal waste water

Earth

Battery lithium could come from geothermal waste water

The hot waste water from a geothermal power plant on the San Andreas fault is a rich source of lithium – now the company is planning to extract it

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Earth

Wind farms don't affect property prices

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Earth

The research that might save us after Copenhagen

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Earth

California gives green light to space solar power

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Earth

Cheap catalyst can make and break hydrogen

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