Another use of wind - http://www.geek.com/articles/geek-cetera/prototype-wind-turbine-condenses-10 00-liters-of-water-a-day-from-desert-air-20120418/
but it makes economic sense mostly in places like Arabia - where water can
be worth more than oil...
From: Jed Rothwell
It does not say how long they are, but only that they are
20% longer than they were a few years ago. Anyway, the longer the blade, the
larger the cross-section it sweeps, and the more power you get.
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