People with blue eyes are better able to see in the dark.
153
There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
About 3000 years ago, most Egyptians died by the time they were 30!
18
In one day an average person will take about 18,000 steps.
55
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Two in five people in the world marry their first love.
270
Yawns are more contagious among people with closer relationships.
163