Only humans shed emotional tears.
331
Your heart will pump about 212 million liters in its lifetime.
26
Poor eyesight (myopia) is associated with higher IQ.
232
Early American humans hunted car-size armadillos and used their shells for houses.
12
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
The human brain is more active during sleep than during the day.
28
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118