Every human spent about half an hour as a single cell.
144
A chance of a woman having twins is increased after the age of 35. About 1 in 27 women will give birth to twins after this age. After 50 the chances of having twins is 1 in 9.
51
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
In a year, the average person walks four miles to make his or her bed.
56
In the presence of attractive women, men find running easier, take more risks, donate more money, consume more calories, and talk more.
28
Boys who have unusual first names are more likely to have mental problems than boys with conventional names. Girls don't seem to have this problem.
131
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104