As the demand for more efficient and more affordable wind power grows, designers are pushing the limits of the technology well beyond the traditional windmill spinning on a grassy hilltop. Often this leads to some pretty wild ideas. Modern turbine design is a testament to the unlimited creativity and ingenuity of today's engineers, but a few of these designs may leave you asking: How exactly is that supposed to work?
Here's our list of the most unusual wind turbine designs that could revolutionize the field. (Text: Bryan Nelson)