Physical phone-blocking devices, powered by NFC wireless technology, are becoming a popular solution for doomscrolling. Brigid Delaney puts one to the test
To test the safety and security of AI, hackers have to trick large language models into breaking their own rules. It requires ingenuity and manipulation - and can come at a deep emotional cost
Trump is volatile, capricious and unreasonable – but he belongs to the old world of analogue power. What comes next will be harder to manage, says Guardian columnist Rafael Behr