Early American humans hunted car-size armadillos and used their shells for houses.
12
Your heart will pump about 212 million liters in its lifetime.
26
The average person's skin weighs twice as much as their brain.
131
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
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
The average person will go on a date at least 100 times before they finally marry.
33
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118