BBCNEWS BBC News September 29, 2021 02:20:00
The most commonly used term in cryptocurrency, is a form of digital money that doesn't have a physicalform. it is powered by block chain, a database of financial transactions which constantly grows as new transactions are added. here is the environmental problem. it is estimated that the global bitcoin network consumes about 80 terawatts hours of electricity annually. that is the entire output of 23 coal powered power stations. there might be a more sustainable answer going forward. it is called hadera, which uses something which requires 5 million times less energy than bitcoin. in contrast t...