They're not the perfect source of renewable energy, but wind turbines could soon be more efficient and as silent as the wind thanks to a radical new redesign by an Australian company.
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Source: http://feeds.gawker.com/~r/gizmodo/full/~3/unMn0ShGI_s/wind-turbine-20-works-harder-without-making-you-hear-all-about-it
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