Thanks to blinking, an awake man will spend 30 minutes with his eyes closed.
More people are using blue toothbrushes rather than the red ones.
In the human body there is so much phosphorus you could produce around 750,000 matches.
Grand piano consists of about 12.000 parts.
If there is a statue of a person on horseback in the park, and the horse has both front legs in the air, the person died in battle. If the horse has one front leg raised, the person died of wounds sustained in battle. If the horse has all of its legs on the ground, the person died of natural causes.
In 1666, the fire that destroyed most of the city of London, at the same time has ended the plague. Mostly because the fire killed infected rats who were the carriers of the disease.