Here's one way to fix the spectrum crunch: set up wireless base stations and WiFi hotspots in every single one of the 9,000 buildings currently owned and operated by the US General Services Administration. That idea, along with the proposal that such installations be made mandatory in all future federal structures, was put before the US Senate this Friday. It's argued that installing femtocells at those locations would improve reception indoors, lighten network loads in busy areas, and expand accessibility for more rural locales. Ubiquitous WiFi routers, on the other hand, hard