Individual pieces of crypto art, non-fungible tokens (NFTs), are at least partially responsible for the millions of tons of planet-heating carbon dioxide emissions generated by the cryptocurrencies used to buy and sell them. Some artists — including those who have already benefited from the craze — think it’s a problem that can be easily solved. Others think the proposed solutions are a pipe dream.
https://www.theverge.com/2021/3/15/22328203/nft-cryptoart-ethereum-blockchain-climate-change