One mathematics teacher from a small town in Iceland is helping change the face of cryptocurrency mining by extracting energy from the Earth.
source https://www.google.com/url?rct=j&sa=t&url=https://beincrypto.com/icelandic-teacher-single-handedly-solves-cryptocurrency-energy-crisis/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNG5sBkGeE-FUr8VycYMAgCpD9TG-g
