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Gold (Au)
Heavy and chemically inert, why is gold, of all the elements of the periodic table, so highly valued by mankind? Does it even provide a sound basis for modern currencies?
Heavy and chemically inert, why is gold, of all the elements of the periodic table, so highly valued by mankind? Does it even provide a sound basis for modern currencies? What is it actually useful for? And, given its value, what extraordinary lengths will people go to, to recover every tiny scrap of it?
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Elements
Chemical elements: where do we get them and how do they fit into our economy?
