One of the directors of the circular, open-air Renaissance theatre in London was William Shakespeare.
An average Egyptian dwelling consisted of regularly arranged rooms.
This animation demonstrates the development of the axe throughout archaeological periods.
A dynamo converts mechanical energy into direct current.
Located close to Osaka, the Japanese castle is also called the White Heron because of its white exterior.
The pancreas and the liver empty digestive juices into the duodenum.
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...
The International Space Station is a habitable satellite built with the cooperation of 16 countries.
The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.
Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.
Aluminium smelting is the process of extracting aluminium from alumina by electrolysis.
A hydrothermal vent is a fissure in the planet's surface through which geothermally heated water erupts.
The ribs, the sternum and the spinal column form the skeleton of the chest.
Bacteria occur in a wide range of shapes, including spheres, rods and spirals.
Bottlenose dolphins are sea mammals which use ultrasound for orientation.
This animation introduces the most important systems of the human body.