There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
Men fall in love faster than women do.
32
You will experience the billionth second of your life when you are 31 years old.
21
The average housewife walks 10 miles a day around the house doing her chores.
100
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
119
On average, men's noses are 10% larger than women's.
12
Every human spent about half an hour as a single cell.
144