You've probably seen sketches like the one above promising you complete cable independence since what, 1996? We're not about to tell you this is the one technology that finally delivers on that utopian dream, but it's surely one of the zanier attempts at it. By converting "ultra fast laser pulses" into radio frequency waves, the researchers claim they've overcome a significant hurdle to making wireless communications ubiquitous -- signal interference. The rapid (each laser burst lasts a mere 100 femtoseconds), pulsing nature of their approach purportedly makes their signal extremely robust,
