It is impossible to sneeze with your eyes open.
The first sewing machine was invented by a British inventor Thomas Saint in 1790 and it was used for sewing leather.
When a man blows his nose, the air speed that comes out under pressure reaches 160 km per hour.
The first city in the World that has reached one million inhabitants was Rome, around 133 BC. London got its one million inhabitants in 1810, and New York in 1875. Today, there are over 300 cities with more than a million inhabitants.
In Denmark there is a special military unit that uses dog sleds for official transport.
In the Middle Ages, all believed as did Aristotle, that the heart is the center of intelligence.
