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OCT
08

Sand

Sand

Sand is after air and water, the most im- portant raw material on earth. Humanity consumes about 40 billion tons of sand annually, mainly for construction. This corresponds to twice the amount of all the sediments transported by all the rivers of the world each year.

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20

Sand

Sand

Sand ist nach Luft und Wasser der wichtigste Rohstoff der Erde. Die Menschheit verbraucht jährlich rund 40 Milliarden Tonnen Sand, vorwiegend zum Bauen. Das entspricht der doppelten Menge aller
Sedimente die von allen Flüssen der Welt pro Jahr transportiert wird. Und obwohl fast ein Fünftel der Landfläche der Erde mit Sandwüsten bedeckt ist, wird Sand knapp.

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