Global bitcoin energy source contributors (IMAGE) American Geophysical Union Caption Worldwide, bitcoin mining still relies heavily on coal and natural gas for its energy, the Earth’s Future study found. Credit Chamanara et al. (2023)/Earth's Future Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.