There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Roughly a quarter of the world's people live in China.
50
You share your birthday with at least 9 other million people in the world.
201
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
Karl Pillemer, a professor, performed a study on thousands of elderly people and what advice they had about life. On happiness, there was a consensus: “the elders viewed happiness as a choice, not the result of how life treats you.”
13
On average women can hear better than men.
170
More redheads are born in Scotland than in any other part of the world.
85