Here's one of those "it's so wacky, it just might work" ideas. Tame tornadoes to generate electricity and perhaps eventually to serve as global air conditioners. Hmm . . .
http://www.boston.com/news/education/higher/articles/2007/08/12/the_underworked_american/?page=1
And more wacky power generating ideas in this Business Week article.
http://www.businessweek.com/technology/content/sep2007/tc2007096_843326_page_2.htm