In many countries, urine was used as a detergent for washing.
17
The search engine Google got its name from the word 'googol', which refers to the number one with a hundred zeros after it.
56
The chills you sometimes feel when listening to music is called "musical frisson."
18
One in five long-term love relationships began with one or both partners being involved with others.
177
There are 86,400 seconds in a day.
110
A fire in Australia has been burning for more than 5,000 years!
91
An iceberg contains more heat than a lit match.
73