Fascinating atmospheric phenomena

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

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Nitrogen cycle

Atmospherical nitrogen is bound by bacteria and used by living organisms in the form of...

Warm front, cold front

Cold and warm fronts are formed where bodies of cold and warm air meet.

Sedimentary rock

Did you know that about 75% of the land on our planet is covered with sedimentary rock?

Coal formation

This video presents the different stages of coal formation.

The formation of fog

Fog is a type of cloud that forms close to the surface of the Earth. There are places on the...

Snow line

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

Why is seawater salty?

Water covers about 71% of the Earth’s surface. But why are there two types of water on Earth,...

How lakes disappear

On a geological time scale lakes are short-lived.

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