It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Most people smile when they are frustrated, according to a study.
15
Children grow faster in the springtime than any other season during the year.
108
On average women can hear better than men.
170
The name "Wendy" was made up for the book Peter Pan!
142
Nearly 10% of American households dress their pets in Halloween costumes.
36
Girls have more tastebuds than boys.
124
95% of people feel uncomfortable when the TV volume is an odd number.
392