A sneeze travels out your mouth at over 100 m.p.h.!
29
It is impossible to hum if your nose is plugged.
366
'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
Dartboards are made out of horsehairs.
129
Any domino can knock over another object up to 1.5x its size. The 32nd object would be big enough to knock over the Empire State Building.
18
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
30
The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
476