The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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Nearly 50% of the world's scientists are assigned to military projects.
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When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
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In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
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There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
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