Each king in the deck of cards represent a great kind from history: spades - King David, clubs - Alexander the Great, hearts - Charlemagne and diamonds - Julius Caesar.
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.
Ancient Greeks often carried their coins in their mouths, because the clothes did not have pockets.
In 100 grams of butter, there are three times more calories than in the same amount of meat.
Kim Peek (54), the autistic genius who inspired the creation of a film "Rain Man", knew by heart the contents of 12.000 books. That are almost all the books he had read from the age of four.
Swallows will fly all day in search of insects and sometimes they will fly more than 800 kilometers.