Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
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
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Sound travels fifteen times faster through steel than through air.
134
The smell of freshly cut grass is actually a plant distress call.
31
One barrel of petroleum holds 42 gallons.
20
A ball of glass will bounce higher than a ball made of rubber.
73