Enamel is hardest substance in the human body.
61
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
The human brain has the capacity to store everything that you experience.
4k
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
Early American humans hunted car-size armadillos and used their shells for houses.
12
Yawns are more contagious among people with closer relationships.
163
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
By weight, Bone is five times stronger than steel.
417