Woodwind instruments differ from brass instruments mainly in their reed.
Living fossil, important stage in the evolution of tetrapods.
The animation demonstrates how laser printers work
The Rietveld Schröder House, located in the town of Utrecht in the Netherlands, can be considered a forerunner of modern houses.
Extinct species of fish which had thick ´armour´ protecting the head.
This animation demonstrates how a washing machine works.
Slavic warriors were greatly respected throughout Europe in the Middle Ages.
The Gaul city Alesia, defended by Vercingetorix, was besieged by the Roman forces of Julius Caesar in 52 BC.
The Orthodox church, situated on a picturesque cliff, was named after John the Apostle
Amino acids that make up proteins are bound by peptide bonds.
The phalanx formation was a military formation of the Greek heavy infantry.
This animation demonstrates the structure and operation of impulse turbines.
Members of the ancient Roman Legions were the masters of military tactics.
Hans Christian Andersen´s legendary character comes to life in a diorama.
Central European farmhouses in the 19th century had characteristic interior and exterior.
Otters are semi-aquatic predatory mammals.
Combine harvesters are machines that harvest and thresh grain crops.
Flat feet, or fallen arches, may cause a number of health problems.
This animation demonstrates the construction of a fire engine.
A beehive tomb on the site of the ancient city of Mycenae, attributed to the legendary king.