USA Today: From a mile away, the sleek rows of wind turbines turn lazily in the stiff morning breeze, the rising sun glinting off their shiny fiberglass blades. Their size many turbines tower 300 feet above the ground only becomes apparent from up close, as the tips of the knife-edged blades spanning nearly an acre slice the air at 200 mph. Utility companies installed thousands of new turbines last year and are on track to install even more this year, generating pollution-free electricity whenever the...