A symbol of division and oppression, the Wall tore a city and numerous families apart.
The three important laws describing planetary motion were formulated by Johannes Kepler.
The animation shows five outstanding works in the history of sculpture.
This animation shows the characteristics of domestic light sources, from traditional light bulbs to LED lights.
In loudspeakers sound waves are generated by electromagnetic induction.
Our gametes are haploid cells produced from diploid cells by meiosis, a special type of cell division.
Bacteria occur in a wide range of shapes, including spheres, rods and spirals.
The pancreas and the liver empty digestive juices into the duodenum.
Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.
Eukaryotic cells contain a number of organelles.
The ribs, the sternum and the spinal column form the skeleton of the chest.
The Buddhist pagoda of the six Harmonies is located in China, by the River Qiantang.
This animation demonstrates the internal structure of the brain.
The primary duty of these Japanese warriors was to serve their feudal lords, even at the cost of their own lives.
RMS Titanic was the largest passenger ship at the beginning of the 20th century
Located close to Osaka, the Japanese castle is also called the White Heron because of its white exterior.
Bottlenose dolphins are sea mammals which use ultrasound for orientation.
Candles have been used for lighting since ancient times.
The inflammation of the vermiform appendix, which is connected to the cecum, requires immediate surgical intervention. The animation shows the cause and...
The animation shows the two-seater Lunar Rover used in the Apollo 15 mission