When glass breaks, the cracks move faster than 3,000 miles per hour. To photograph the event, a camera must shoot at a millionth of a second!
114
Paper money is not made from wood pulp but from cotton. This means that it will not disintegrate as fast if it is put in the laundry.
37
'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
American car horns beep in the tone of F.
66
Kilts are not native to Scotland. They originated in France.
57
Oak trees can live 200 or more years.
61
A typical lead pencil can draw a line that is 35 miles long.
158
Mentally doing a task makes you better at it. Your mind can barely tell the difference.
18