Located in the Grand Mosque of Makkah, the Kaaba shrine is the most sacred site of Islam.
The animation helps to develop space perception.
This animation compares the life cycles of mosses and ferns, helping to understand the general life cycle of plants.
The animations demonstrates the structure of a typical flower.
The spinal cord is the part of the central nervous system running inside the spinal column from which spinal nerves branch out.
The ancient Roman arena became well-known for the chariot races held here.
Mercenaries of the ancient Roman army were well-trained and well equipped with the most up-to-date weapons.
The Olympian gods in ancient Greek mythology were as diverse as humans.
The formation of the Sun and the planets started with the contraction of a dust cloud about 4.5 billion years ago.
The two groups of angiosperms are monocots and dicots.
The first commercially successful technique of photography was invented by the French Louis Daguerre.
The skin is the soft outer covering of our body, its three layers are the epidermis, the dermis and the hypodermis.
The largest bronze-age building complex of ancient Crete was probably the centre of Minoan civilisation.
The pancreas and the liver empty digestive juices into the duodenum.
Medieval Syrian water wheels were used to convey water to distant areas.
The Earth is composed of several spherical layers.
The orbits of the 8 planets in our Solar System are elliptical.
Due to the Earth´s tilted axis, the angle of the Sun's rays at given latitudes continuously changes during the year.
The geographic coordinate system enables every location on the Earth to be exactly specified.
The difference between the temperature of the polar and equatorial zones causes atmospheric circulation which is affected by a number of factors, including...