Very interesting and Informative things part IV

1. The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
2. Human hair and fingernails continue to grow after death.
   
3. It takes about 20 seconds for a red blood cell to circle the whole body.
4. The plastic things on the end of shoelaces are called aglets.
5. Most soccer players run 7 miles in a game.
6. The only part of the body that has no blood supply is the cornea in the eye. It takes in oxygen directly from the air.
7. Every day 200 million couples make love, 400,000 babies are born, and 140,000 people die.
8. In most watch advertisements the time displayed on the watch is 10:10 because then the arms frame the brand of the watch (and make it look like it is smiling.).
9. Colgate faced big obstacle marketing toothpaste in Spanish speaking countries. Colgate translates into the command "go hang yourself.".
10. The only 2 animals that can see behind itself without turning its head are the rabbit and the parrot.