In the state of Indiana (US), there is a town called Santa Claus.
In the Middle Ages, all believed as did Aristotle, that the heart is the center of intelligence.
The temperature of a raindrop is on average lower than the air temperature by about 3 degrees Celsius.
Every 30.000 years riverbeds are deepened by a meter.
On our planet, 5 kilograms of diamonds are found every day.
Playing chess without looking at the board, was known in Persia and India back in VIII century.
