Bottlenose dolphins are sea mammals which use ultrasound for orientation.
Located close to Osaka, the Japanese castle is also called the White Heron because of its white exterior.
Seawater, as an external force, plays an important role in shaping coastlines.
An earthquake is one of the most devastating natural phenomena.
The primary duty of these Japanese warriors was to serve their feudal lords, even at the cost of their own lives.
Candles have been used for lighting since ancient times.
The International Space Station is a habitable satellite built with the cooperation of 16 countries.
The geographic coordinate system enables every location on the Earth to be exactly specified.
The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.
The ancient city of Babylon was built on the banks of the Euphrates River in Mesopotamia.
The Rutherford Experiment proved the existence of positively charged atomic nuclei. The results led to the elaboration of a new atomic model.
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.
One of the best known buildings in the world, this is the residence and office of the President of the United States.
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.
A symbol of division and oppression, the Wall tore a city and numerous families apart.
Medieval townhouses were built from stone or brick and were several storeys high.
This animation demonstrates the development of the axe throughout archaeological periods.
Due to the Earth´s tilted axis, the angle of the Sun's rays at given latitudes continuously changes during the year.