Meta and Microsoft Double Down on Huge A.I. Spending, Despite DeepSeek Threat

We have sad news: We are following the latest on the midair collision near Ronald Reagan National Airport outside Washington between an American Airlines flight carrying 64 people and a U.S. Army helicopter with three crew members aboard. No one was believed to have survived the crash, officials said.

The C.E.O. of American Airlines has arrived in Washington to help coordinate with the F.A.A. and the National Transportation Safety Board. Results of the investigation will probably take months….