A research says that crypto currency mining could produce enough emissions to raise global temperatures by 2°C within 15 years.
"Bitcoin is a cryptocurrency with heavy hardware requirements, and this obviously translates into large electricity demands," said Randi Rollins, a master's student at the University of Hawaii at Manoa and co-author of the paper.
Rollins and her colleagues estimated that the use of bitcoins in the year 2017 emitted 69 million metric tons of CO2.
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