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Saturn is the second largest planet in the Solar System, easily recognisable by its rings.
The most important Neoclassicist building in France, completed in 1791, became the final resting place of many of France´s greats.
Typical working-class districts with unhealthy living conditions were built at the time of the Industrial Revolution.
A wide variety of torture devices were in use in medieval dungeons.
Common salt is dissolved by water: polar water molecules form a coat around the ions.
During freezing hydrogen bonds are formed between water molecules resulting in a crystal structure.
Polymerised ethylene is known as polyethylene, a type of plastic.
Geothermal power stations convert energy of hot, high-pressure water found in deeper layers of the Earth into electricity.
These excellent shipbuilders and sailors travelled great distances on the seas and rivers.
This effective strategy was based on the fast and synchronised attack of different branches of the army.
The cathedral named after the Assumption of Mary into Heaven is one of the gems of French Gothic architecture.
The cannon was an important type of firearms at the beginning of modern history, widespread both on land and water.
Solid, white substance, a constituent of vegetable oils and animal fats.
The first indoor theatre in modern history to be constructed according to the theatre-building codes of Antiquity was inaugurated in 1585.
The warship having several rows of oars was the typical warship of the Hellenistic era.
The battle of the Greek-Persian War became famous for the heroic sacrifice of the Spartan soldiers.
An entertaining animation to practise orientation using a map.
The work of smiths – one of the first professions in history – became even more important in the Middle Ages.
Due to their asymmetrical profile of the wings, lift is produced while flying at a high speed.
The building material of the cell walls and fibres of plants.