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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

They offered so much promise, but ultimately turned sour. These are the most disappointing ideas since the turn of the millennium

Features

Technology

US government wants to tax bitcoin to reduce its environmental impact

News

Technology

Bitcoin creator Satoshi Nakamoto dismissed early climate concerns

News

Technology

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

News

Technology

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

News

Technology

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

News

Technology

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

News

Image of a bitcoin in a cloud of emissions

Technology

Bitcoin has emitted 200 million tonnes of CO2 since its launch

News

Man holding laptop next to bank of computer equipment

Technology

Plan to cut Ethereum energy use sees miners switch cryptocurrencies

News

An Ethereum office

Technology

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

The electricity consumption of the Ethereum cryptocurrency rivals that of some countries, but a controversial update to how it works will slash this by 99 per cent – here's the low-down on what's going on

News

Technology

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

News

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

Technology

Why is the UK government getting into NFTs and is it a good idea?

News