Senegalese women spend an average of 17.5 hours a week just collecting water.
27
Women who read romance novels have sex twice as often as those who don't.
101
Intelligent men tend to be more sexually faithful.
31
Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
973
Intelligent people have more zinc and copper in their hair.
233
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11