Earth

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[Earth]

How Far Can Sand Travel?

Did you know that there is a regular sand service between Africa and America? It turns out that the sands from the Sahara desert annually “travel” across the Atlantic Ocean and settle in the USA and in the Amazon forests. Subequatorial winds carry the sand twice a year: in late spring and early autumn.

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[Earth]

Where Do Tsunamis Come From?

Tsunamis are mostly provoked by underwater earthquakes and underwater volcanic eruptions, which sharply raise or lower the seabed and, as a result, move huge masses of water. Until now, the mechanisms of the tsunami have not been thoroughly studied, and it is often difficult to detect an approaching dangerous wave since at first, it is not high enough to start sounding the alarm.

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[Earth]

What is Wet Bulb Globe Temperature?

In order keep safe when it’s hot outside, it’s important to know how hot it really feels. Scientists created something called the Wet Bulb Globe Temperature or WBGT to measure the heat stress in the air. Imagine you have three thermometers: a regular one, a wet one, and one inside a shiny black ball.

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[Earth]

What is Mirage?

What is a mirage and where does it come from? Mirage is undoubtedly one of the most mysterious atmospheric phenomena that has always been associated with secrets and legends. But in reality, the mirage is easily explained from a scientific point of view. It appears when the air near a highly heated surface (about 60-70 °C) also heats up and becomes inhomogeneous.

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