As avid puzzlers know full well, the humble jigsaw puzzle is a thing of beauty in multiple ways. Not only are jigsaws an absorbing time sink, but multiple studies have demonstrated they are good for ...

An investigative reporter best known for exposing fraud at Silicon Valley blood-testing startup Theranos sued Elon Musk's xAI, Anthropic, Google , OpenAI, Meta Platforms and Perplexity on Monday for ...