Seismic data points to a detonation in northwest China, U.S. says.

A senior U.S. official on Tuesday revealed what he said were new details of an underground nuclear test blast that China allegedly conducted in June 2020.

Remarks by a top administration official appeared to be aimed at dispelling skepticism of its assertions, as President Donald Trump vows to restart U.S. tests.

Elon Musk’s Grok AI chatbot featured on social media platform X, is now undergoing an investigation launched by the European Union.

At a event in Washington D.C., A U.S. official said a remote earthquake in 2020 was caused by a Chinese nuclear test.

Modern warfare is no longer defined only by tanks and artillery.

On Aug. 11, 2025, an explosion at U.S. Steel’s Clairton Coke Works outside Pittsburgh — a 392-acre riverside industrial ...