In the year 1900, the number of human population was 1.5 million, of whom a quarter lived in Europe.
The average weight of a male brain is 1450 grams, while the weight of an average female brain is about 1300 grams.
The first sewing machine was invented by a British inventor Thomas Saint in 1790 and it was used for sewing leather.
The longest border in the world is the one that separates Canada and the United States; a length of 6,416 kilometers.
Chickens in China annually lay about 160 billion eggs. If we made an omelet out of them, every inhabitant of the Earth would get a piece of omelet with a diameter of one meter.
In 100 grams of butter, there are three times more calories than in the same amount of meat.
