Every human spent about half an hour as a single cell.
144
Only 2% of the Earth's population are natural redheads.
13
More than half the population of Kenya is under the age of 15.
71
There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
You forget 90% of your dreams.
256
According to Harris Interactive, 70% of men and 57% of women shower daily.
75
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15