Trump will face a new China this time, one whose advanced manufacturing muscles have exploded in size, sophistication and quantity.

After his lies and expulsion from Congress, and before his sentencing in February, George Santos chases the limelight with a party and a podcast.

Ohio’s senior Democratic senator told colleagues that despite his defeat, he was not done with politics just yet.

The Transportation Department has expanded the rights of airline passengers with mobility disabilities. The first changes will go into effect next month.

The president-elect’s threat to impose major tariffs on Canadian goods and other pointed comments have tapped into a treacherous moment in domestic politics.

Also, Elon Musk and SpaceX face national security reviews. Here’s the latest at the end of Tuesday.

But mass shootings remain a rare occurrence. Only a small fraction of the nation’s nearly 130,000 schools report gun incidents each year.

The declining ability of many boys and men to compete at school and in the workplace has become both a social and a political issue.

Major obstacles could stymie Syria’s new leaders as they struggle to find some footing and improve the country’s living conditions.

Reality has set in on Capitol Hill that with President-elect Donald J. Trump poised to take office, the era of U.S. military support for Ukraine is coming to an end.

Still stinging from the election, President Biden is pushing for his final priorities but has absented himself from the national conversation about Donald Trump after warning repeatedly that he was a threat to American democracy.

The man whom authorities call a serial killer was charged with second-degree murder in the case of Valerie Mack, who disappeared in 2000.

Scientists are seeing changes that could have consequences for the whole planet.

The artificial intelligence start-up’s funding shows investors remain enthusiastic about the A.I. boom.

President-elect Donald J. Trump has said he would use his power to punish people he claims have wronged him. Those goals are now coming into focus.

Building a chatbot like ChatGPT requires billions upon billions of dollars. That’s the driving force behind OpenAI’s plans to change how it’s managed.

Nongovernmental workers and journalists have scoured prisons for clues about his fate in the absence of an official American presence in the country.

Commonwealth Fusion Systems, an M.I.T. spinoff, aims to generate carbon-free electricity in an industrial park near Richmond in the early 2030s.

The schools were accused of giving special treatment to wealthy students who might not otherwise have been admitted.

The National Highway Traffic Safety Administration changed an existing rule to expand and enhance seatbelt warning requirements.