Already one good story this year about a cylindrical wind turbine that may be placed around a pipe, a chimney... or even a tree! I guess it would be supported on the outside by an anchored, cylindric skeleton, so that turbine would glide on the inside of the skeleton:
http://www.newscientist.com/article/dn16395-invention-treehugging-wind-turbine.html
Like "The Yes Man" with this "Darwinian Year 2009" at the blog: Only Positive News, I think...
(except that I loose my job because of bad financial times here)...by the bright side of Yoda...!
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