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The latest news about environmental and green
technologies – renewables, energy savings, fuel cells

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Wind turbine payback

Researchers have carried out an environmental lifecycle assessment of 2-megawatt wind turbines mooted for a large wind farm in the US Pacific Northwest. They conclude that in terms of cumulative energy payback, or the time to produce the amount of energy required of production and installation, a wind turbine with a working life of 20 years will offer a net benefit within five to eight months of being brought online.

Posted: Jun 16th, 2014

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Ice in fuel cells imaged directly for the first time

Researchers have succeeded in imaging the distribution of frozen and liquid water in a hydrogen fuel cell directly for the first time. The method opens up the prospect of studying one of the main problems of using fuel cells to power vehicles: ice can clog the pores in the fuel cells and affect their performance.

Posted: Jun 16th, 2014

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Greening our cities

Solutions to halving energy consumption, costs and greenhouse emissions in cities may be on the horizon, as long as partners find suitable ways to cooperate.

Posted: Jun 11th, 2014

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Snowballs to soot: The clumping density of many things seems to be a standard

Particles of soot floating through the air and comets hurtling through space have at least one thing in common: 0.36. That, reports a research group, is the measure of how dense they will get under normal conditions, and it?s a value that seems to be constant for similar aggregates across an impressively wide size range from nanometers to tens of meters.

Posted: Jun 11th, 2014

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Sopcawind, a multidisciplinary tool for designing wind farms (w/video)

The SOPCAWIND tool is a piece of software that facilitates the design of wind farms, bearing in mind not only the aspects of energy productivity but also the possible impact the wind farm may have on the environment, radars or other telecommunications systems in the vicinity. It also assesses acoustic noise, the effect of shadow on nearby housing, and applies criteria for heritage protection or clearance from transport networks and certain facilities.

Posted: Jun 10th, 2014

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How much fertilizer is too much for the climate?

Helping farmers around the globe apply more-precise amounts of nitrogen-based fertilizer can help combat climate change. In a new study, researchers provide an improved prediction of nitrogen fertilizer's contribution to greenhouse gas emissions from agricultural fields.

Posted: Jun 9th, 2014

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Cleaning the air with roof tiles

Researchers created a roof tile coating that when applied to an average-sized residential roof breaks down the same amount of smog-causing nitrogen oxides per year as a car driven 11,000 miles.

Posted: Jun 4th, 2014

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