In the 18th century, a Swedish scientist discovered some incredible magnetic metals and even he did not imagine the importance they would have in the future. Specifically, there are 15 elements that went from being “rare earths” to becoming essential metals for new electronic and environmental technologies; experts have called it the “new oil”. These are the 15 metals, the use of each of them and where we can find them: Thulium – used in X-ray machines. Yttrium : we can find it in devices capable of detecting earthquakes. Promethium – is in nuclear batteries. Terbium – They use it for fluorescent lamps or to make energy-saving light bulbs. Lutetium – Its main use is in the Read more