One human hair can support 3 ounces.
191
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
Pain occurs when sounds are above 130 db.
124
Only humans shed emotional tears.
331
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
It takes approximately 12 hours for food to entirely digest.
93
Your thumb is about the same size as your nose.
124
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13