Shale gas

This animation explains the technology of shale gas extraction.

Conquistador (16th century)

Spanish conquerors owed their success to their armour and firearms.

Tutankhamun’s tomb (14th century BC)

One of the greatest archaeological finds of the 20th century was the tomb of the Egyptian...

Land reclamation in the Netherlands, 17th century

Inhabitants of the northern part of the Netherlands have successfully fought the sea...

Cortical organisation of speech

Producing speech requires the synchronised operation of several cortical centres.

Planaria gonocephala

One of the most common types of flatworms.

The first days in school

Learn the concept of colours, numbers, letters and shapes while playing

Lead-acid battery

Electrochemical processes in a lead-acid battery produce electric current.

De Havilland DH-106 Comet 1 (1949)

The aircraft manufactured by the British de Haviland company was the world's first...

Battle of Marathon (490 BC)

The marathon running event was instituted in commemoration of the run of a Greek soldier...

The city of Ur (3rd millennium BC)

The ancient city located near the river Euphrates was an important Sumerian centre.

Measuring time

The first calendars and time-measuring instruments were already used by ancient Eastern...

Conformations of ethane

The staggered conformation of ethane is more stable than the eclipsed conformation.

The Knights Templar (12th-13th century)

One of the most important religious military orders, formed in the era of the Crusades.

Aztec warriors (15th century)

The fearsome looking Aztec warriors could not stop the Spanish conquistadors with their...

Seeds and germination

Dicotyledons have two embryonic leaves (cotyledons), while monototyledons have only one.

Woodwind instrument

Woodwind instruments differ from brass instruments mainly in their reed.

Prehistoric armoured fishes

Extinct species of fish which had thick ´armour´ protecting the head.

Mir Castle Complex (17th century)

The Mir Castle Complex, situated in the town of Mir, Belarus was built in the...

Marsh harrier

Marsh harriers are birds of prey found almost worldwide.

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