World's most efficient web server now uses ZERO watts!

Some tech-savvy students have entered the Lexus Eco Challenge with their supremely power-efficient server. The web sever runs on an iPod Touch and serves webpages to the internet over its WiFi connection. Due to the power efficiency of the iPod Touch, the server has a maximum power requirement of 0.5 watts. They then connected it to a solar panel which provides all the energy needed to power it - effectively running the server with zero watts!

Their website has a video (below) and some great articles (7 Ways To Charge Your iPod Without an Outlet, anyone?) and links to useful resources.