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Comment Re:What about a big ball of fire in the sky? (Score 1) 656

I don't know how this gets modded interesting, but this has been studied ad nauseum, and no, recent warming is NOT caused by solar variability. It's amazing how many global warming deniers will jump on any alternate explanation and leave their much vaunted scepticism trailing in the dust. Any explanation is as good as another so let's choose the one that is most convenient.
Science

Harvesting Energy in the Sky 261

withoutfeathers writes "The Economist magazine has an article on Flying wind farms. Mind you, we're not talking about ordinary, terrestrial windmills here. We're talking about actual airborne — up to 10km in the sky — wind farms intended to harvest the immense supply of energy in the jet stream. On the surface, the idea seems a little eccentric but, in fact, San Diego (California, US) based Sky WindPower has, apparently, thought their concept through pretty thoroughly and believes they can not only make this work, but do so profitably. The article discusses several other ideas for high-flying wind farming including a Dutch proposal to use pairs of kites to drive a generator."

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