At a hearing in federal court, prosecutors defended an unusual, 11th-hour criminal case accusing the former F.B.I. director of leaking classified information a decade ago.

© Monica Jorge for The New York Times

Members of the team behind the Times/Siena Poll on what the data show, how they’ve improved their methodology and what it means to be “right.”

Lawyers for James B. Comey said the case centered on an issue that had already been investigated and had not led to charges, of a purported leak of national security information to The Times in October 2016.

© Doug Mills/The New York Times

In Congress and in several states, officials have been questioning online gambling companies about their use of artificial intelligence.

© Tony Luong for The New York Times