In the past decade the amount of electricity produced by harnessing the wind in the U.S. has grown 13-fold, now supplying some 2.3 percent of U.S. electricity needs, or enough juice to power the state of Wisconsin. Wind turbines have been rising above the plains in Texas, cropping up on ridge lines in Oregon and even threatening to appear offshore in Massachusetts ’s Nantucket Sound–all to take advantage of the uneven heating of Earth’s surface that creates air currents, or wind. [More]













Scientific American - Technology