One in 500 humans has one blue eye and one brown eye.
145
Awarding people money for doing well in IQ tests causes them to score better, $10 increased people's score by an average of more than 20 IQ points. IQ tests don’t just measure intelligence - they also measure effort.
9
City dwellers have longer, thicker, denser nose hairs than country folks do.
48
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
The average woman uses her height in lipstick every 5 years.
146
The average person will go on a date at least 100 times before they finally marry.
33
The first man to swim the length of Great Britain grew a beard to stop jellyfish stinging his face.
16