Elon Musk, of Tesla, SpaceX and DOGE fame, said in court on Wednesday he was "a fool" for putting money into the artificial intelligence company OpenAI, which started off as a nonprofit but later crea...

AI and quantum technologies present both opportunity and risk: they can dramatically improve companies' capabilities and accuracy, but they also create an entirely new, expansive threat landscape.

Musk has repeatedly recited variations of the phrase while being hammered by artificial-intelligence giant OpenAI’s lawyer William Savitt during cross-examination, which continued into its second day ...