Science: Tilting with Windmills

Oil prices may skyrocket and energy crises come and go, but the winds will blow forever. In an effort to tap that inexhaustible source of energy, everyone, from NASA's skilled aerodynamicists to do-it-yourself basement tinkerers, is now suddenly rediscovering one of the oldest technologies known to civilized man: the use of the windmill.

Near Sandusky, Ohio, NASA'S Lewis Research Center is putting finishing touches on a lOO-ft.-tall experimental steel windmill with two 62-ft.-long aluminum blades. When these blades begin turning in the summer breezes off Lake Erie later this month, they should produce...

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