Mr. Witt is the author of “The Thinking Machine,” a history of the A.I. giant Nvidia. He lives in Los Angeles. Oct. 10, 2025 How much do we have to fear from A.I., really? It’s a question I’ve been ...

Here’s what to know about Daylight Saving Time. Daylight Saving Time begins at 2 a.m. Sunday. The Associated Press is an independent, not-for-profit news cooperative headquartered in New York City.