Ozone layer

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

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Weather and climate

Climate is the typical weather of a certain region that changes practically only on a geological...

The water cycle (basic)

Water on Earth is in a continuous state of change. The water cycle includes processes...


The dissolution of limestone results in the development of karst formations.

Deep Sea Hydrothermal Vents

A hydrothermal vent is a fissure in the planet's surface from which geothermally...

Snow line

Above a certain altitude snow does not melt, not even in summer.

Fascinating atmospheric phenomena

We can often observe spectacular atmospheric phenomena. Let's see how some of these are formed.

The path of bauxite

Bauxite is a raw material in aluminium production. Watch this video to learn how the well-known...


A fjord is a long, narrow inlet with steep sides, created in a valley carved by...

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