By weight, Bone is five times stronger than steel.
417
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
On average, someone in the US suffers a stroke every 40 seconds; someone dies every 3 minutes from stroke.
57
Dutch, on average are the tallest people.
187
In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
There are more than 150 million sheep in Australia, and only some 20 million people.
247