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
Every month, about 9 out of 10 American children visit a McDonald’s restaurant.
299
There are more than 150 million sheep in Australia, and only some 20 million people.
247
40% of people who are rejected in romantic love slip into clinical depression.
72
Each day, there are over 120 million sexual intercourse taking place all over the world.
301