Magnesium

Obsidian

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Thermal processes occurring deep inside the Earth manifest on the surface through volcanoes. Volcanoes, due to their terrifying destructive power, have found their place in the myths of many ancient peoples, so the very name “volcano” is associated with the name of the Roman god of fire. Volcanic eruptions bring valuable minerals to the surface, … Read more

The Unknown Amazon – Terra Preta

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The first descriptions of Spaniards who came to the area of the Amazon city of Manaus in 1542 in search of El Dorado describe a populous population and abundance of cultivated fruits and vegetables. However, their testimony quickly falls into oblivion, and decades later, scientists would claim with disbelief that the jungle and the extremely … Read more