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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The average home creates more pollution than does the average car.
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Indoor pollution is 10 times more toxic than outdoor pollution.
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Some toothpastes and deodorants contain the same chemicals found in antifreeze.
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Iron weighs more after it rusts.
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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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The sun is 330,330 times larger than the earth.
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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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