The average person will go on a date at least 100 times before they finally marry.
33
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Yawns are more contagious among people with closer relationships.
163
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
A man's beard grows fastest when he anticipates sex.
239
Only humans shed emotional tears.
331