Cryptocurrencies require as much, if not more, energy to mine as precious metals like copper, gold or platinum, according to some latest calculations.
source https://www.google.com/url?rct=j&sa=t&url=https://www.theregister.co.uk/2018/11/07/cryptocurrency_mining_energy/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNEcHxkeUByMx5URUn2tuv1xiG3uBA
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