0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
By weight, Bone is five times stronger than steel.
417
There are more than 150 million sheep in Australia, and only some 20 million people.
247
Two in five people in the world marry their first love.
270
Forty percent of American adults cannot fill out a bank deposit slip correctly.
155
Nearly half of the entire world's adult population has never drunk alcohol.
12
40% of people who are rejected in romantic love slip into clinical depression.
72