President Donald Trump ordered the US Navy to return to using steam catapults to launch planes off of aircraft carriers, acting on a long-time complaint despite opposition from many naval officers. In a presidential memorandum, Trump ordered US Defence Secretary Pete Hegseth to come up with a plan within 60 days on what would be needed to use hydraulic catapults in the next Gerald Ford-class nuclear-powered aircraft carrier. The planned USS Doris Miller will be the fourth ship in the six-vessel...

Luigi Mangione is expected to plead guilty on Friday to resolve federal charges relating to the fatal shooting of UnitedHealth Group executive Brian Thompson, and prosecutors will recommend he serve life in prison, a person familiar with the matter said on Thursday. The plea would come at a Friday hearing that US District Judge Margaret Garnett set after federal prosecutors and defence lawyers jointly requested one. Court records did not identify the purpose of the hearing, and it is possible...

A professor managed US funding of computer science research for more than two years while failing to disclose that he was simultaneously involved in Chinese government programmes, according to previously unreported documents. The professor, Tao Li, was a programme officer at the National Science Foundation from 2015 to 2017, a job that included overseeing the awarding of grants for research in areas such as hardware, software and algorithms. During that time, Li took part in two Chinese talent...