Ten More Interesting Facts About Humans

1. The surface area of a human lung is equal to a tennis court.
2. Sneezes regularly exceed 100 mph.
3. Approximately 75% of human waste is made of water.
4. The average person expels flatulence 14 times each day.
   
5. Earwax production is necessary for good ear health. It protects the delicate inner ear from bacteria, fungus, and dirt. It also cleans and lubricates the ear canal.
6. Babies are always born with blue eyes. The melanin in a newborn’s eyes often needs time after birth to be fully deposited or to be darkened by exposure to ultraviolet light, revealing the baby’s true eye color.
7. Every human spent about half an hour as a single cell.
8. After eating too much, your hearing is less sharp.
9. Women are born and remain better smellers than men.
10. Your nose can remember 50,000 different scents.