The average mosquito has 47 teeth.
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.
Swallows will fly all day in search of insects and sometimes they will fly more than 800 kilometers.
When a man blows his nose, the air speed that comes out under pressure reaches 160 km per hour.
Oysters can change their sex from male to female. They can do this countless times.
The first ice cream was made in the 18th century in the Sicilian town of Taormina with the help of snow from the slopes of Mount Etna, the only live volcano in Europe.
