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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Sound travels about 4 times faster in water than in air.
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Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
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Most dust particles in your house are made from dead skin!
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One barrel of petroleum holds 42 gallons.
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Because heat expands the metal, the Eiffel Tower always leans away from the sun.
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One ragweed plant can release as many as one billion grains of pollen!
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