By Tobias Carroll It might sound like the solution to a game of Clue, but rest assured that the following describes a very real phenomenon: El Salvador mining Bitcoin using volcanoes. Well, to be more specific, the country is mining Bitcoin using the energy generated by a volcano — but the larger point stands. Can you use geothermal power to create cryptocurrency? One nation seems bound and determined to find out. El Salvador, as you may recall, adopted Bitcoin as a legal currency last month. It’s not the only legal tender in El Salvador, but El Salvador is the only country to adopt such a pol…

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