FILE PHOTO: A representation of virtual currency Bitcoin is seen in front of a stock graph in this illustration taken March 15, 2021. REUTERS/Dado Ruvic/Illustration
(Reuters) - Tesla boss Elon Musk's sudden u-turn over accepting bitcoin to buy his electric vehicles has thrust the cryptocurrency's energy usage into the headlights.
Some Tesla investors, along with environmentalists, have been increasingly critical about the way bitcoin is "mined" using vast amounts of electricity generated with fossil fuels.
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