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'Green' cryptocurrency uses 18 times more energy than makers claim

A cryptocurrency that aims to avoid the disastrous energy consumption of bitcoin is actually using 18 times more energy than its makers claim – but it promises improvements are on the way

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The 5 worst ideas of the 21st century – and how they went wrong

Humans

The 5 worst ideas of the 21st century – and how they went wrong

Features

Technology

US government wants to tax bitcoin to reduce its environmental impact

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Technology

Bitcoin creator Satoshi Nakamoto dismissed early climate concerns

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Technology

Bitcoin halving: When is it and what does it actually mean?

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Should nations try to ban bitcoin because of its environmental impact?

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Technology

NFTs died a slow, painful death in 2023 as most are now worthless

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Technology

A single bitcoin transaction uses enough water to fill a swimming pool

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Image of a bitcoin in a cloud of emissions

Technology

Bitcoin has emitted 200 million tonnes of CO2 since its launch

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Man holding laptop next to bank of computer equipment

Technology

Plan to cut Ethereum energy use sees miners switch cryptocurrencies

The Merge, a long-awaited update which promised to slash Ethereum’s vast energy consumption, has instead pushed miners towards other cryptocurrencies

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Ethereum Merge: What will the radical update mean for cryptocurrency?

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If cryptocurrencies are unhackable, how do they keep getting stolen?

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Technology

What will the crypto crash mean for 'bitcoin nation' El Salvador?

Analysis

Technology

Will bitcoin succeed in the Central African Republic? Probably not

Analysis