In the name of energy conservation, Google is powering a search engine by the name of Blackle. It has been shown that for a given monitor, the energy required to drive a screen displaying light images is greater than that of one displaying a black image. On your own, the energy savings from using Blackle are small, but multiplied by the number of Google users worldwide the effects are substantial. Based on the average number of queries received by Google on a daily basis, the result is a global savings of 8.3 Megawatt-hours a day.
posted originally from: AT:Hometech