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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Airports that are at higher altitudes require a longer airstrip due to lower air density.
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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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Iron weighs more after it rusts.
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The sun is 330,330 times larger than the earth.
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Out of all the senses, smell is most closely linked to memory.
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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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Research indicates that plants grow healthier when they are stroked.
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