By weight, Bone is five times stronger than steel.
417
The human body contains over a billion miles of DNA.
147
Every human spent about half an hour as a single cell.
144
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The average person will go on a date at least 100 times before they finally marry.
33
Human hair and fingernails continue to grow after death.
7
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11