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energy efficiency

Wave-powered 'ducks' could purify seawater

Technology

Wave-powered 'ducks' could purify seawater

Devices that purify salt water by harnessing the motion of the ocean's waves could provide a more energy-efficient way for arid countries to produce drinking water

News

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World faces 'dirty, insecure' energy future

News

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Technology

Clean green hydrogen-making machine created

News

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Technology

Pulsing gels could power tiny devices

News

Is Venezuela's pipeline the highway to eco-hell?

Earth

Is Venezuela's pipeline the highway to eco-hell?

News

Solar sailing – poised to take off

Earth

Solar sailing – poised to take off

Features

Biofuel made from power plant CO<SUB>2</SUB>

Earth

Biofuel made from power plant CO2

News

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Technology

AA battery charges through USB port

News

Small-scale renewable power – low-wattage thinking?

Earth

Small-scale renewable power – low-wattage thinking?

Comment

Plankton could power robotic submarines

Technology

Plankton could power robotic submarines

If such subs are ever going to undertake lengthy missions into the vast unexplored deep, new power sources will be needed

News

Earth

Fuels gold: Big risks of the biofuel revolution

Features

Technology

GM bacteria churn out 'microdiesel' fuel

News

Earth

Solar alchemy turns fumes back into fuels

News

Technology

Nuclear power: Return of the atom

News

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