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a pound of highly enriched uranium as used to power a nuclear submarine or nuclear aircraft carrier is equal to something on the order of a million gallons of gasoline. When you consider that a pound of uranium is smaller than a baseball, and a million gallons of gasoline would fill a cube 50 feet per side (50 feet is as tall as a five-story building), you can get an idea of the amount of energy available in just a little bit of U-235.

Three-percent enrichment is sufficient for use in a civilian nuclear reactor used for power generation. Weapons-grade uranium is composed of 90-percent or more U-235.

France, for instance, about 75 percent of the electricity is generated from nuclear power,

There are more than 400 nuclear power plants around the world, with more than 100 in the United States.

Uranium-238 (U-238) has an extremely long half-life (4.5 billion years