A report into the feasibility of space-based power rigs that would beam solar power down to earth in the form of microwaves has been published, with its findings being along the lines of "yes, it'll happen, but only when the money's there." The Pentagon is itching to get its hands on the technology, which would include mirrors several miles wide focusing sunlight onto solar cells, highlighting the potential for beaming energy to remote regions of the world (read: wherever they're fighting.) The problem is more of an economic one, with the technology behind the project apparently being feasible since the 70s: only now that oil prices have tripled, and the technology has become greatly more efficient, is an actual space installation seeming realistic. In fact, we could see early efforts for the giant mirrors as soon as 2012: any bets that they'll double as death rays?

Forbes' tips for HDTV shoppers