Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
There are two credit cards for every person in the United States.
2
Most people smile when they are frustrated, according to a study.
15
Identical twins do not have identical fingerprints.
79
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
The average single man is one inch shorter than the average married man.
88
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
Only about 2% of the world population has green eyes.
36