A few seconds of doorbell footage has become the most replayed fragment in the search for Nancy Guthrie, 84, after investigators said they believe she was taken from her home in Tucson, Arizona, ...

The trust game tested both coordination and loyalty between contestants. Each participant selected one person they trusted most, forming pairs that then entered the arena. They chose either a blue ...

Anthropic has released its latest AI model, Claude Sonnet 4.6, which is better at using computers, coding, design and knowledge work, the company said. The startup launched another model, Claude Opus ...