Mythos has triggered emergency responses from central banks and intelligence agencies globally, as Anthropic decides who has access to the powerful model.

An American Airlines regional jet flew close to an Air Canada regional jet after aborting its landing. It was the second such incident in recent days at a major U.S. airport.

Republican majorities are at odds on big issues as the Senate resorts to extraordinary measures to pass homeland security funding over a Democratic blockade.

A law meant to end surprise medical billing accidentally created a multibillion-dollar industry that is making doctors richer.

As the pontiff arrives in the tiny authoritarian nation of Equatorial Guinea, some Catholics in Africa say they are excited about his visit but are feeling a little left out.

In the Big Bend region, a portal to the early universe is enabled by the largest dark-sky reserve on Earth.

The Trump administration and Democratic state leaders are blaming each other for what everyone agrees is a big problem. The president has targeted California and Gov. Gavin Newsom in particular.

Publication of a trove of confidential Supreme Court memos ignited debates in the legal academy.