Poor eyesight (myopia) is associated with higher IQ.
232
Early American humans hunted car-size armadillos and used their shells for houses.
12
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
In one day, adult lungs move about 10,000 litres of air.
11
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
On average, there's 100 billion neurons in the human brain.
83