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.
5
Sound travels fifteen times faster through steel than through air.
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Diamonds can be shattered with a hammer.
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At room temperature, the average air molecule travels at the speed of a rifle bullet.
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Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Most dust particles in your house are made from dead skin!
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The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The average temperature at 40,000 feet above sea level is -60 F.
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