The ancient city of Babylon was built on the banks of the Euphrates River in Mesopotamia.
This animation demonstrates the parts of the head, the torso and the limbs.
Christopher Columbus' three-masted carrack, the Santa Maria was the flagship of his first, landmark voyage.
Wealthy citizens in ancient Rome owned large houses with varied layouts of several rooms.
Commercial maritime routes of container ships form a global network.
The animation shows the two-seater Lunar Rover used in the Apollo 15 mission
An interesting logical exercise: you have many weights that look the same, you have to find the only one that is different.
The first supersonic passenger airliner entered service in 1976.
The average house in Ancient Greece had a rectangular, geometrical floor plan and two storeys.
The world famous monument in England still poses mysteries for archaeologist.
Space probes and Mars rovers examine the structure of Mars and possible traces of life.
The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.
This animation demonstrates the internal structure of the brain.
Medieval townhouses were built from stone or brick and were several storeys high.
The Buddhist pagoda of the six Harmonies is located in China, by the River Qiantang.
The heart generates the electrical impulses necessary for its own operation. The graphic representation of the electrical activity of the heart is the...
River locks make rivers with great level differences safe for boating.
In loudspeakers sound waves are generated by electromagnetic induction.
The apparent movement of the Sun is caused by the Earth's rotation around its axis.
One of the directors of the circular, open-air Renaissance theatre in London was William Shakespeare.