Today I discovered an organization called Green Wi-Fi. Green Wi-fi's project is a great idea. The premise is that there are hundreds of places on this earth that don't have reliable (if any) electrical power. While the One Laptop Per Child project is working on PCs with hand cranks, people wondered how those laptops would get networking power?
That's where the folks at Green Wi-fi Come in. They developed a solar powered Wi-Fi Router that can take part in a Mesh Network. While its still in the design phases, it is definitely an amazing idea who's time has come. The most unique and interesting feature is that to optimize power efficiency and keep costs down, they developed a power control module to regulate bandwidth when power is low (i.e. at night or during long periods of rain where sunlight is limited).