The human eye blinks an average of 4,200,000 times a year.
233
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Mushrooms are more closely related to humans than they are to plants.
47
Yawns are more contagious among people with closer relationships.
163
Your heart will pump about 212 million liters in its lifetime.
26
The average person will go on a date at least 100 times before they finally marry.
33
