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The Earth is divided into geographical and climatic zones, which result in the zonation of vegetation.
This animation demonstrates instruments used to examine atmospheric phenomena.
The Earth is divided into 24 time zones. Standard time is the time used within time zones.
A glacier is a large body of ice that forms from snow, and is in constant, slow motion.
Atmospherical nitrogen is bound by bacteria and used by living organisms in the form of various compounds.
The dreaded warriors of the Mongol Empire made it one of the largest empires in history.
Solar power stations convert solar energy into electricity.
The Space Shuttle was a manned, reusable spacecraft operated by NASA.
The products of oil refining include diesel oil, petrol and lubricants.
Napoleon Bonaparte´s Grande Armée was considered invincible.
The Channel Tunnel is a 50.5 km long railway tunnel between the United Kingdom and France, beneath the English Channel.
The design and structure of modern houses play an important role in environmental protection.
The Voyager space probes were the first man-made objects to leave the Solar System. They gather data about outer space and carry information about humanity.
Raw iron is produced from iron ore in iron smelters.
Treated sewage water can be used in agriculture and industry.
As opposed to underground mines, in open-pit mines the layers covering coal are removed, so the coal can be extracted on the surface.
Tidal power stations utilise the daily fluctuation of the water level to produce electricity.
The outcome of one of the greatest battles in the history of the ancient East (fought by the Egyptians and Hittites) was indecisive.
The fearsome looking Aztec warriors could not stop the Spanish conquistadors with their primitive weapons.
Spanish conquerors owed their success to their armour and firearms.
English sailing ships were among the best ships in the 17th-19th centuries.
The term 'hussar' refers to a type of light cavalry which originated in Hungary and was the most popular in the 18th–19th centuries.
Keeps were typical buildings in the Middle Ages, also built independently from castles.
