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.
21
A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realizes it's there, though!
25
Cigarette smoke contains 4,800 chemicals, 69 of which cause cancer.
145
The lense of the eye continues to grow throughout a person's life.
34
Vaccines contain formaldehyde, ethylene glycol (antifreeze), phenol (disinfectant / pesticide), and aluminum.
-14
The smallest human penis ever recorded was just 5/8 of an inch long!
77
Men get hiccups more often than women.
93
The skin on your lips is 200 times more sensitive than your fingertips.
345