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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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Quantum computers could usher in a crisis worse than Y2K

Insight

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

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Reddit mentions may help predict changes in cryptocurrency value

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Technology

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

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

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A tale of two Silicon Valley Sams – Bankman-Fried and Altman

Technology

A tale of two Silicon Valley Sams – Bankman-Fried and Altman

This was the year when the worlds of cryptocurrency and AI were both hit by drama, says Annalee Newitz

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

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Technology

Going Infinite review: Who is Sam Bankman-Fried?

Culture

Technology

Quantum computers could slash the energy use of cryptocurrencies

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Technology

Ethereum closed a big security hole with its energy-saving update

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