November 19, 2023

Mr. Altman was forced out of the artificial intelligence start-up on Friday, leading to an outcry from his supporters and the company’s investors.

Using electromagnetic waves to flummox and follow smarter weapons has become a critical part of the cat-and-mouse game between Ukraine and Russia. The United States, China and others have taken note.

The Capitol attacks ruptured their mutual trust. In the weeks before Brian Mock’s sentencing, could he mend the divide with his son A.J.?

Five years ago, David Buckel violently ended his life in a public park in Brooklyn. People who knew him were shocked and angry. Yet they refused to give up.

The New York Police Department is spending $500 million on a new radio system it calls more reliable and secure. But the public will no longer be able to monitor what officers are doing minute to minute.