Two in five people in the world marry their first love.
270
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
By weight, Bone is five times stronger than steel.
417
Babies crawl an average of 200m a day.
212
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82
There are more than 150 million sheep in Australia, and only some 20 million people.
247