The green wifi project aims to bring wifi network in places where electricity is not at hand, for example the third world. To do this, they developed a prototype node powered by solar energy.
You would think, why do they want a wireless network if they don’t have electricity for their computers etc … well, for example the famous 100 dollar laptop It does not need to connect it to the power supply for its operation and it also has two Wi-Fi antennas. This computer has some kind of wire, by pulling it we can charge the built-in battery.
With these two inventions, children in the third world could use a computer and, on top of that, be able to connect to the Internet, even if they don’t have electricity where they live.