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by RexetBlell 3262 days ago
Proof of work (mining) is needed to be able to come to consensus on the next block in the chain. A better and more efficient algorithm is being developed. Ethereum is switching from proof of work to proof of stake in the next year or two, so there will not be any mining any more, which should reduce the cost of deciding what the next block is. Read more about it here: https://github.com/ethereum/wiki/wiki/Proof-of-Stake-FAQ
1 comments

Proof of stake comes with its own set of problems.