It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
People who are lying to you tend to look up and to the left (their left).
178
Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
76
The average person will go on a date at least 100 times before they finally marry.
33
Yawns are more contagious among people with closer relationships.
163
All babies are color blind when they are born.
114
In Haiti, only 1 out of every 200 people own a car.
23
Americans did not commonly use forks until after the Civil War.
82