The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
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A cubic yard of air weighs about 2 pounds at sea level.
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The force of a suction cup is calculated using F=AP.
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Aluminum used to be more valuable than gold!
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German chemists made a replica of a trophy the size of one molecule.
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Balsa wood is classified as a hard wood!
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