By weight, Bone is five times stronger than steel.
417
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
Nearly half of the entire world's adult population has never drunk alcohol.
12
Every month, about 9 out of 10 American children visit a McDonald’s restaurant.
299
40% of people who are rejected in romantic love slip into clinical depression.
72
Babies crawl an average of 200m a day.
212
In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82