Japan can boast about the oldest anthem on the Earth. Its text is from the 9th century.
In the human body there is so much phosphorus you could produce around 750,000 matches.
In the Middle Ages, patients were tended by nuns, who in between themselves called one another sisters. That name was later used for trained nurses.
In 1898 Nikola Tesla successfully demonstrated a “ship with a remote control” as a continuation of the research on radio frequency.
Chameleon’s tongue is twice as long as his body.
In one year an average man consumes around 1000 kilograms of food and drinks.