The main cause of global warming is the biggest not because the currency due to the mining, the main reason is that population increase and the burning of fossil fuels, and dig just consumes a tiny fraction of our energy, and most are in the mine electricity extremely cheap areas, these areas power resources are very abundant, if it were not for the mine to use electricity, These resources are probably going to be wasted, and most of them use hydroelectric power, so to ban bitcoin mining because of global warming I think is extremely unreasonable.