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Atmospherical nitrogen is bound by bacteria and used by living organisms in the form of various compounds.
The Earth’s magnetic North and South poles are located near the geographic North and South poles.
This animation demonstrates different types of soil.
Still waters take various forms on the planet. Let’s take a look at how we can group them.
Bauxite is a raw material in aluminium production. Watch this video to learn how the well-known silver-tone...
Above a certain altitude snow does not melt, not even in summer.
What secrets does the Moon have? Who were the first men on the Moon? You’ll find out everything from this...
The diameter of our galaxy is about 100,000 light years; it contains more than 100 billion stars, one of...