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Appendicitis
The inflammation of the vermiform appendix, which is connected to the cecum, requires immediate surgical intervention. The animation shows the cause and...
Atmospheric circulation
The difference between the temperature of the polar and equatorial zones causes atmospheric circulation which is affected by a number of factors, including...
ISS
The International Space Station is a habitable satellite built with the cooperation of 16 countries.
The human eye
The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.
Glands connected to the duodenum
The pancreas and the liver empty digestive juices into the duodenum.
Lymphatic system
Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.
Bacteria (spheres, rods, spirals)
Bacteria occur in a wide range of shapes, including spheres, rods and spirals.
Kaaba (Makkah)
Located in the Grand Mosque of Makkah, the Kaaba shrine is the most sacred site of Islam.
Mars Exploration Program
Space probes and Mars rovers examine the structure of Mars and possible traces of life.
Samurai
The primary duty of these Japanese warriors was to serve their feudal lords, even at the cost of their own lives.
Himeji Castle
Located close to Osaka, the Japanese castle is also called the White Heron because of its white exterior.
From the Stone Age to the Iron Age
This animation demonstrates the development of the axe throughout archaeological periods.
Bedouin camp
The seminomadic lifestyle of the Bedouin adapted to the climatic and environmental conditions of the desert.