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…showed last 75 words of 488 total…fuel known as gasohol. However, ethanol constitutes only 5 to 10 percent of gasohol. Scientists hope to increase the energy potential of ethanol, and develop engines and machines able to run mostly on ethanol. This would be a breakthrough in the field of fuels. Ethanol has many advantages: For one thing, ethanol is renewable, and importantly, is an inexhaustible resource. As opposed to fossil fuels, ethanol will never run out. Secondly, Ethanol is relatively safe and non-toxic.