It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
The typical person spends about 600 hours having sex between the ages of 20 and 70.
234
More than half the population of Kenya is under the age of 15.
71
Women rate men more attractive if other women are looking and smiling at him.
17
According to the American Society for Microbiology, 90% of women and 75% of men wash their hands after using a public restroom.
170
The single biggest predictor of love is proximity.
30
On average a woman has 4 sexual partners in her lifetime.
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