European crayfish

A type of large freshwater crayfish widespread in Europe.

Respiratory system

The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.

Parts of the human body

This animation demonstrates the parts of the head, the torso and the limbs.

Santa Maria (15th century)

Christopher Columbus' three-masted carrack, the Santa Maria was the flagship of his first, landmark voyage.

Newton’s Laws of Motion

This animation demonstrates Sir Isaac Newton's three laws of motion that laid the foundation for classical mechanics.

Ancient Roman domus

Wealthy citizens in ancient Rome owned large houses with varied layouts of several rooms.

Ancient Greek house

The average house in Ancient Greece had a rectangular, geometrical floor plan and two stories.

Nose, the mechanism of smelling

Olfactory receptors produce electric signals when stimulated by odors.

Stonehenge (Great Britain, Bronze Age)

The world famous monument in England still poses mysteries for archeologist.

Parts of the human brain

The main parts of the human brain are the brain stem, the cerebellum, the diencephalon, and the cerebrum, which is divided into lobes.

Connective tissues

Connective tissues include loose and dense connective tissues, adipose tissue, blood, tendon and bone tissue.

Mechanism of taste reception

Taste receptors convert chemical stimuli into electric signals.

The heart

The heart is the central pump of the cardiovascular system beating several billion times over our lifetime.

Formation of stratovolcanoes

Stratovolcanoes consist of layers of volcanic ash, debris and lava.

The Earth’s magnetic field

The Earth’s magnetic North and South poles are located near the geographic North and South poles.

Ozone layer

The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for life on Earth.

Lightning

Lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.

Greenhouse effect

Human activity increases the greenhouse effect and leads to global warming.

Pyramid of Djoser (Saqqara, 27th century B.C.)

The step pyramid, built in the 27th century B.C., was the first pyramid in Egypt.

Nuclear power plant

Nuclear power plants convert the energy released during nuclear fission into electric power.

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