The ribs, the sternum and the spinal column form the skeleton of the chest.
Eukaryotic cells contain a number of organelles.
A type of steam locomotives used by British Railways were manufactured in the 1950s.
Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.
The pancreas and the liver empty digestive juices into the duodenum.
The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.
The Internet allows us to send data quickly to large distances.
Aluminium smelting is the process of extracting aluminium from alumina by electrolysis.
This animations demonstrates the exterior and interior construction of cars, as well as their operation.
The structure and arrangement of polypeptide chains affects the spatial structure of proteins.
Candles have been used for lighting since ancient times.
Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.
The inflammation of the vermiform appendix, which is connected to the cecum, requires immediate surgical intervention. The animation shows the cause and...
Life magazine picked Gutenberg's invention of mechanical movable type printing as the most important event of the second millennium.
The diameter of the Sun is about 109 times that of the Earth. Most of its mass consists of hydrogen.
The International Space Station is a habitable satellite built with the cooperation of 16 countries.
The primary duty of these Japanese warriors was to serve their feudal lords, even at the cost of their own lives.
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.