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CleanTech News

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

New technique measures evaporation globally

Researchers at Columbia Engineering and Boston University have developed the first method to map evaporation globally using weather stations, which will help scientists evaluate water resource management, assess recent trends of evaporation throughout the globe, and validate surface hydrologic models in various conditions.

Posted: Apr 12th, 2013

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CO2 removal can lower costs of climate protection

Directly removing CO2 from the air has the potential to alter the costs of climate change mitigation. It could allow prolonging greenhouse-gas emissions from sectors like transport that are difficult, thus expensive, to turn away from using fossil fuels. And it may help to constrain the financial burden on future generations, a study now published by the Potsdam Institute for Climate Impact Research shows.

Posted: Apr 12th, 2013

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Innovative self-cooling, thermoelectric system developed

Researchers at the UPNA/NUP-Public University of Navarre have produced a prototype of a self-cooling thermoelectric device that achieves 'free' cooling of over 30ºC in devices that give off heat. It is a piece of equipment that acts as a traditional cooler but which consumes no electricity because it obtains the energy it needs to function from the very heat that has to be dissipated.

Posted: Apr 11th, 2013

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Limiting greenhouse gas emissions from land use in Europe

New research presented by IIASA researcher Hannes Bottcher at the EGU General Assembly this week estimates future land use emissions for the European Union, showing that Europe could potentially reduce greenhouse gas emissions from land use by more than 60 percent by 2050.

Posted: Apr 10th, 2013

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Diatoms explain release of CO2

Scientists have found unexpectedly high concentrations of opal, a mineral containing silicate, in marine sediments during the transition periods from ice ages to warm phases. The explanation as to what caused these high concentrations can also clarify how oceans release sequestered carbon dioxide. The underlying mechanism is still unexplained today.

Posted: Apr 10th, 2013

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Global solar photovoltaic industry is likely now a net energy producer

The rapid growth of the solar power industry over the past decade may have exacerbated the global warming situation it was meant to soothe, simply because most of the energy used to manufacture the millions of solar panels came from burning fossil fuels. That irony, according to Stanford University researchers, is coming to an end.

Posted: Apr 8th, 2013

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Hydrogen from methane without CO2 emissions

Production of hydrogen from methane without carbon dioxide emissions is the objective of a project in which KIT is a major partner. At KALLA, the Karlsruhe Liquid-metal Laboratory, researchers are setting up a novel liquid-metal bubble column reactor, in which methane is decomposed into hydrogen and elemental carbon at high temperature.

Posted: Apr 8th, 2013

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