Most people smile when they are frustrated, according to a study.
15
Sleeping on the job is acceptable in Japan. It is viewed as exhaustion from working hard. Some people fake it to look committed to their job.
57
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
Men laugh longer, louder, and more often than women.
61
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
Americans did not commonly use forks until after the Civil War.
82
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15