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
Your heart will pump about 212 million liters in its lifetime.
26
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
19

