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Modern office building

Saving energy and protecting the environment are important factors in the design of modern office buildings.

Suction pumps and direct action pumps

Direct action pumps and suction pumps are among the simplest water pumps.

Alkanes

Alkanes are saturated hydrocarbons which can be organised into a homologous series.

Treasury of Atreus (Mycenae, 14th century BC)

A beehive tomb on the site of the ancient city of Mycenae, attributed to the legendary king.

Alesia (France, 1st century BC)

The Gaul city Alesia, defended by Vercingetorix, was besieged by the Roman forces of Julius Caesar in 52 BC.

Nitrogen (N₂) (intermediate)

A colourless, odourless, non-reactive gas, it constitutes 78.1% of Earth´s atmosphere.

Ichthyostega

A prehistoric amphibian and an early representative of the Tetrapods, which became extinct 360 million years ago.

Katie on the playground

A colourful and entertaining animation to practise orientation in space.

Burj Al Arab (Dubai, 1999)

Burj Al Arab, the world's only seven-star luxury hotel is located in the United Arab Emirates.

Villages

Villages were the first permanent human settlements

Western jackdaw

Groups of western jackdaws are frequently found in cities. Konrad Lorenz analysed the complex social behaviour of these animals.

Carbon dioxide (CO₂) (intermediate)

Colourless, odourless, heavier-than-air gas. Necessary for the photosynthesis of plants.

Diamond

Crystalline allotrope of elemental carbon, the hardest known natural substance.

The science of Santa Claus

Every year, Santa Claus brings gifts to nearly 600 million children on Christmas Eve. Let's see what physical facts make his job harder.

Shadows

Change of light conditions in different seasons. Measuring height using shadows.

Saker falcon

The saker falcon is a large bird of prey widespread in Europe and and Asia.

Photosynthesis (basic)

Plants are capable of converting inorganic substances (carbon dioxide and water) into organic sugar.

Human evolution

The brain and skull underwent significant changes during human evolution.

Graphite

One of the crystalline allotropes of elemental carbon.

West Indian Ocean coelacanth

Living fossil, important stage in the evolution of tetrapods.

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