Poor eyesight (myopia) is associated with higher IQ.
232
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
160
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
On average, there's 100 billion neurons in the human brain.
83
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
It takes about 20 seconds for a red blood cell to circle the whole body.
102