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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Neanderthal man had a brain capacity 100cc larger than modern man's.
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One cubic foot of gold weighs more than 1,200 pounds!
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A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
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Iron weighs more after it rusts.
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Sound travels fifteen times faster through steel than through air.
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The average temperature at 40,000 feet above sea level is -60 F.
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A 'jiffy' is an actual unit of time for 1/100th of a second!
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