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Coal and gas are replacing oil as a fuel in many power plants. Natural gas can replace gasoline and diesel in trucks and buses. Cars that use electric power instead of—or in addition to—gasoline are also being built. Hybrid vehicles can run on either electric batteries or gasoline, depending on driving conditions. Coal can be changed into a liquid that behaves like oil. It can also be changed into a gas that works like natural gas. Coalbased liquid and gas fuels burn more cleanly than coal as it comes from the ground.

Another problem with ethanol is that producing and transporting it take a great deal of energy— energy that often comes from fossil fuels. Saving Oil Replacing all fossil fuels will take a long time and may not even be possible. There are many practical steps, however, that people can take to use In Their Own Words “Renewables are already a significant business in terms of tens of billions of dollars in investment per year.... High energy prices, climate change and energy security are converging as the new engine driving the development of clean energy.

S. cars run on a blend of ethanol and gasoline. This may help the nation use less crude oil. Ethanol from corn, however, is not a perfect solution. Corn is needed for food and animal feed, so using too much corn for ethanol can disrupt the food supply. It can also drive up 36 Corn and other crops can be used to produce ethanol, which can be substituted for gasoline in vehicle engines. food prices. Scientists are working to make ethanol from grasses. This would not harm the food supply. Another problem with ethanol is that producing and transporting it take a great deal of energy— energy that often comes from fossil fuels.

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