Wireless Data From Every Lightbulb?

Imagine if we could send data through a lightbulb? Well, Harald Haas (of University of Edinborough) reckons maybe we can. This is an idea that could well take off in Africa, where infrastructure (or lack thereof) seriously hampers data transfer. Of course, a lightbulb generally requires electricity… but there are ways around that too. Imagine solar power plus an LED lightbulb …

This was one of the ideas profiled in the TED and The Huffington Post 18 great ideas of 2011. More here.