merbs writes: Imagine a stretch of open ocean, populated by a swath of wind turbines with skyscraper-sized blades, whipping into the gusts like enormous palm trees. The vision is partly terrifying, partly inspiring, and being taken entirely seriously by the federal government and one of our top research laboratories. [Sandia National Labs, in an effort led by the University of Virginia] has unveiled the preliminary design for a new offshore wind turbine with 650-foot turbine blades. That, as its announcement points out, is twice the size of an American football field. It's also roughly the size of Trump Tower in New York.