Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
A person can live without food for about a month, but only about a week without water.
156
The human brain doesn't stop developing until about 25 years old.
102
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
A human being loses an average of 40 to 100 strands of hair a day.
133
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31