In an executive order issued Monday night, the president said transgender service members “cannot satisfy the rigorous ...

Gov. Josh Green battled a measles outbreak that killed 83 people, mostly children. President Trump wants Robert F. Kennedy, ...

The Bulletin of the Atomic Scientists shifted the hands of the symbolic clock to 89 seconds to midnight, citing the threat of ...

In a harsh letter to lawmakers considering Robert F. Kennedy Jr.’s nomination for health secretary, Ms. Kennedy called her ...

The president is increasingly threatening other countries with tariffs for issues that have little to do with trade.

In positioning himself as a junior partner to the president and doing his bidding on matters large and small, the Louisiana ...

The little-known artificial intelligence firm has emphasized research, even as it emerged as the brainchild of a hedge fund.

Chief among congressional Republicans’ priorities is an extension of the 2017 tax law, most of which is set to expire at the ...

DeepSeek’s A.I. models show that China is making rapid gains in the field, despite American efforts to hinder it.

Participants at this year’s Joint Mathematics Meetings explored everything from the role of A.I. to the hyperbolic design of ...

The museum’s move followed a similar one last week by the National Gallery, as museums try to comply with an executive order ...

President Emmanuel Macron announced plans to alleviate crowds at the Paris museum and to charge higher fees for visitors from ...