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An employee among mining rigs at the Evobits crypto farm in Cluj-Napoca, Romania

Quantum computers could slash the energy use of cryptocurrencies

20 June 2023

Mining cryptocurrencies like bitcoin could be done using quantum computers, cutting their electricity use by 90 per cent


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

23 May 2023

At least one cryptocurrency based on the old version of Ethereum is still vulnerable to a software flaw that enables attackers to steal funds


Cryptocurrency Ethereum has slashed its energy use by 99.99 per cent

26 April 2023

An experimental update to Ethereum, the world’s second-biggest cryptocurrency, has led to a dramatic reduction in the energy used to secure the currency and verify transactions


Why the tech apocalypse of 2022 was largely a good thing

Why the tech apocalypse of 2022 was largely a good thing

14 December 2022

With Twitter, FTX and Alexa all in the doldrums by the end of this year, Annalee Newitz explains why this is actually an encouraging sign for humanity


A physical representation of bitcoin on a chip

Emissions from mining a single bitcoin have increased 126-fold

29 September 2022

Between 2016 and 2021, the carbon emissions associated with mining bitcoin have increased from 0.9 tonnes to 113 tonnes per coin


Image of a bitcoin in a cloud of emissions

Bitcoin has emitted 200 million tonnes of CO2 since its launch

28 September 2022

Bitcoin's demand for electricity has led to huge carbon emissions, but a slump in the cryptocurrency's price and rising energy costs have slowed its energy use, at least temporarily


Man holding laptop next to bank of computer equipment

Plan to cut Ethereum energy use sees miners switch cryptocurrencies

20 September 2022

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


An Ethereum office

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

13 September 2022

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


A cracked bitcoin token

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

5 August 2022

News of a $190 million cryptocurrency theft emerged this week, despite cryptocurrencies being designed to be unhackable. Here's the low-down on what is going on and how safe bitcoin or other cryptocurrencies are


Mandatory Credit: Photo by Moises Castillo/AP/Shutterstock (12786687d) Bitcoin sign is displayed on the window of a cell phone store in San Salvador, El Salvador, . The government of El Salvador on Monday rejected a recommendation by the International Monetary Fund to drop Bitcoin as legal tender in the Central American country Bitcoin, San Salvador, El Salvador - 02 Feb 2022

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

16 June 2022

El Salvador has invested heavily in bitcoin and related infrastructure in a bold plan to build its economy around the cryptocurrency, but now its value has plummeted


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