TechnologyQ-Day could destroy bitcoin – and our retirement savings Even if you’ve never bought any cryptocurrency, like columnist Karmela Padavic-Callaghan, your money may be affected by bitcoin’s fate – which is uncertain, as quantum computing advances are threatening to make the encryption protecting it useless Comment
TechnologyBitcoin has emitted 200 million tonnes of CO2 since its launch 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 ¿ìè¶ÌÊÓÆµ