A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10
The Japanese commonly put ketchup on their rice.
16
Roughly a quarter of the world's people live in China.
50
More boys than girls are born during the day; more girls are born at night.
120
Yawns are more contagious among people with closer relationships.
163
In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82
