By weight, Bone is five times stronger than steel.
417
Babies crawl an average of 200m a day.
212
On average, someone in the US suffers a stroke every 40 seconds; someone dies every 3 minutes from stroke.
56
Dutch, on average are the tallest people.
187
Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
104
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Two in five people in the world marry their first love.
270
