It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Infants spend more time dreaming than adults do.
102
The average single man is one inch shorter than the average married man.
88
During your lifetime, you'll eat about 60,000 pounds of food, that's the weight of about 6 elephants!
53
The average person falls asleep in seven minutes.
115
Babies cry but they don't produce tears until one to three months after birth.
238
