'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
255
A fire in Australia has been burning for more than 5,000 years!
91
The largest diamond ever found was an astounding 3,106 carats!
99
The symbol on the 'pound' key (#) is called an octothorpe.
82
Water is actually naturally blue.
48
Fine-grained volcanic ash can be found as an ingredient in some toothpastes.
55
More than 6,000 people with pillow-related injuries check into U.S. emergency rooms every year!
51
97% of all paper money in the US contains traces of cocaine.
93