Early American humans hunted car-size armadillos and used their shells for houses.
12
The human brain has the capacity to store everything that you experience.
4k
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Obsessive nose picking is called Rhinotillexomania.
101
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
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