The world's youngest parents were 8 and 9 and lived in China in 1910.
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There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
47% of people have a nightmare at least once a month.
186
In a year, the average person walks four miles to make his or her bed.
56
According to Harris Interactive, 70% of men and 57% of women shower daily.
75
Americans throw out 4.5 pounds of trash a day - twice that of 40 years ago.
76
Men are more attracted to women whose bone structure is similar to their own mothers. It's called "sexual imprinting".
18