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We need a global crackdown on Bitcoin mining to curb its monstrous energy demands

Huge concrete data centers, permanently plugged into power plants and telephone exchanges, maintain much of online life. But the infrastructure behind internet-based cryptocurrencies such as bitcoin, dogecoin and ethereum is more like a rusty traveling circus. And right now, that circus is on the road. Bitcoin relies on a network of millions of specialist machines, known as miners, around 70% of which are currently based in China. Like a never-ending game of Hungry Hippos, each player hammers their mining machines 24/7 to try and scoop up as many bitcoins as possible. With only a few hippos, it’s easy for everyone…

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