There has been an escalation in the legal battles over billionaire Elon Musk's new US government efficiency agency. Here's ...

Bret Taylor, the chairman of OpenAI’s board, said the artificial intelligence company was “not for sale.” Mr. Musk is separately raising money for his A.I. start-up, xAI. By Cade MetzMike ...

Federal layoffs are starting with huge numbers of probationary workers, and there are warnings of bigger cuts on the way.