The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
The world's shortest man measures only 21.5 inches.
73
In one day an average person will take about 18,000 steps.
55
Every human spent about half an hour as a single cell.
144
According to a study, women ages 22 to 30 with no children and no spouse earned a higher median income than comparable men in 39 of the 50 largest U.S. cities in 2008.
9
Approximately 4 to 5% of the U.S. population has one or more clinically significant phobias in a given year. Specific phobias occur in people of all ages. The average age of onset for social phobia is between 15 and 20 years of age, although it can often begin in childhood.
30
Two in five people in the world marry their first love.
270
Babies crawl an average of 200m a day.
212