The largest cell in the human body is the female egg and the smallest is the male sperm.
682
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
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
The human brain doesn't stop developing until about 25 years old.
102
Poor eyesight (myopia) is associated with higher IQ.
232
The human sigh acts as a physiological reset button.
23