General Motors has become the last of America's Big Three car makers to reach a deal with strikers, as the US auto industry bends to labour power after a summer of strikes across a range of sectors. Also, President Joe Biden on Monday signed an executive order on AI requiring developers to share safety test results. Plus, social media platform X – formerly Twitter – is currently valued at less than half of what billionaire tycoon Elon Musk paid for it just a year ago.