> Babies are born without kneecaps. They appear when the child is 2-6 years of age.

> Your body is creating and killing 15 million red blood cells per second!

> The average human produces 10,000 gallons of saliva in a lifetime.

> The force of 1 billion people jumping at the same time is equal to 500 tons of TNT.

> You can tell if a skunk is about if you smell only .000000000000071 ounce of its spray.

> You breathe about 10 million times a year.

> The fastest growing nail is on the middle finger.

> The most sensitive finger on the human hand is the index finger.

> The human body weighs 40 times more than the brain.

> After eating too much, your hearing is less sharp.

> A person swallows approx. 295 times while eating dinner.

> There are more people alive today than have ever died.

> The human body is better suited to two four-hour sleep cycles than one eight-hour one.

> A man's beard contains between 7000 and 15,000 hairs.

> A beard grows an average of 140mm a year.

> A hair is 70 per cent easier to cut when soaked in warm water for two minutes .

> Women's hair is about half the diameter of men's hair.

> 4 million children die each year from inhaling smoke from indoor cooking fires that burn wood and Dung.

> 4 million people die annually from diarrhea infections, caused by poor sanitary conditions

> The hardest bone in the human body is the jawbone.