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
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
According to scientists, the color of the cup that we're drinking from can alter our perception of the actual taste of the drink.
12
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
A cubic yard of air weighs about 2 pounds at sea level.
31
Iron weighs more after it rusts.
16
The earth is approx. 6,588,000,000,000,000,000 tons.
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