What is computing power? When people speak of supercomputers, they often talk about how powerful the machines are. But just what is computing power, and what makes one type of machine more powerful than another?
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Pee Power: The Latest Experiments in Turning Waste into Energy Humans produce 10 billion liters of urine every day. That's a lot of raw material with which to power the world. HowStuffWorks.com blogger Sarah Dowdey covers some ideas for converting waste into