Demand for Alternative Energy Poses Many Challenges

With the world's oil supply increasingly at risk of terrorist attacks and other disruptions, there is an international rush to develop alternative energy sources to power the growing number of cars around the world. In his recent push to develop alternative energy sources, President Bush has stressed the need for intermediate solutions such as ethanol and hydrogen.

At a time when 60 percent of the crude oil used by U.S. refineries comes from outside the country, President Bush says creating alternative sources of energy to replace fossil fuels is an economic and national security issue.

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