If you multiply the number 111,111.111 with 111,111.111 you will get the number 12.345.678.987.654.321.
Coca-Cola was originally green in color.
In the human body there is so much phosphorus you could produce around 750,000 matches.
The first computer was made in 1946 at the University of Pennsylvania. ENIAC (Electronic Numerical Integrator And Calculator) had 18,000 electronic pipes, 30 tons and it needed 154 m2 of space.
Cleopatra's Needle, which is now located at Central Park in New York was once part of a sundial.
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.
