All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
Your ears secrete more earwax when you are afraid than when you aren't.
235
You mostly breathe from only one nostril at a time!
75
The lense of the eye continues to grow throughout a person's life.
34
A sneeze can travel as fast as 100 miles per hour.
43