By weight, Bone is five times stronger than steel.
417
40% of people who are rejected in romantic love slip into clinical depression.
72
There are more than 150 million sheep in Australia, and only some 20 million people.
247
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
There are about 255 babies born worldwide every minute.
46
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104