Instead of wasting clean, potable water, Google uses a dirty source of water and cleans it so it can be used for cooling Google's data centers. By the end of 2008, Google claims two of its data centers will run entirely recycled water. Google said it believes by 2010 recycled water will fuel 80 percent of the company's power consumption.
While the number of commodity computers that Google has built is a closely guarded secret, the company maintains that the machines, and the dozens of data centers all over the world that house them, are necessary to help organize the world's information through Google's search and other Internet applications. eWEEK looks at Google's method for maximizing computing power while conserving energy in this slide show.