Medieval townhouses were built from stone or brick and were several storeys high.
The B-24 Liberator was an American heavy bomber aircraft, built in large numbers, that was used on every front during World War II.
The inflammation of the vermiform appendix, which is connected to the cecum, requires immediate surgical intervention. The animation shows the cause and...
The average house in Ancient Greece had a rectangular, geometrical floor plan and two storeys.
This animation shows the characteristics of domestic light sources, from traditional light bulbs to LED lights.
The heart generates the electrical impulses necessary for its own operation. The graphic representation of the electrical activity of the heart is the...
This animation demonstrates the internal structure of the brain.
The name of this magnificent palace complex originates in Arabic and means 'the red one'.
The largest bronze-age building complex of ancient Crete was probably the centre of Minoan civilisation.
In loudspeakers sound waves are generated by electromagnetic induction.
Life magazine picked Gutenberg's invention of mechanical movable type printing as the most important event of the second millennium.
The animation shows five outstanding works in the history of sculpture.
The Buddhist pagoda of the six Harmonies is located in China, by the River Qiantang.
The animation shows the two-seater Lunar Rover used in the Apollo 15 mission
Wealthy citizens in ancient Rome owned large houses with varied layouts of several rooms.
The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.
This animation demonstrates the parts of the head, the torso and the limbs.
The three important laws describing planetary motion were formulated by Johannes Kepler.
The atomic bomb is one of the most destructive weapons in human history.
Christopher Columbus' three-masted carrack, the Santa Maria was the flagship of his first, landmark voyage.