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Rhenium in the soil

Extraction of metals - what do you imagine? A mine in which workers and advanced machines struggle with rocks to wrench the precious ore. It turns out that there are a lot of different ways now.
I'll tell you about the idea of two Bulgarian scientists who discovered a method of obtaining one of the rarest and most expensive metals on Earth – Rhenium. view more »

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Where did you go, black holes?

There’s still not even one convincing proof that the fearsome cosmic objects lurk somewhere in the dark view more »

Space
 
 
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