Giving Blood

Japanese researchers have developed a breakthrough fuel cell that runs on human blood. The fuel cell draws electrons from glucose in the blood to produce electricity. The application for such fuel cells would be in artificial organs -- such as hearts -- where surgery usually has to be repeated every so often to replace batteries. With batteries powered by the person's own blood, such repeat surgeries may be a thing of the past. Naturally, some people will be wanting to hook their iPods up to their veins. It would be a new and novel use for needles.

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