'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
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Only 8% of the world’s currency is physical money. The rest exists only on computers.
20
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
There are more fatal car accidents in July than any other month.
85
By raising your legs slowly and laying on your back, you can't sink in quicksand.
105
The first toilet being flushed in a motion picture was in the movie Psycho.
67
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.
479