Nollaig O'Connor

Claudio Manuel Neves Valente had been an academic powerhouse in his home country of Portugal.

Ukraine is under intense pressure on the battlefield and at the negotiating table, but underwater it appears to be a growing threat to Russia

CHICAGO — Around 20 million people across the West and Midwest are under winter alerts Saturday as a fast-moving storm delivers heavy snow, strong winds and blasts of cold that is blanketing cities like Chicago

Travelers passing through John F. Kennedy International Airport’s Terminal 4 faced delays Sunday after operations went “down” around noon, according to the Port Authority of New York and New Jersey

Police are investigating after four people were injured in a shooting at an annual tree lighting ceremony in Concord, North Carolina, on Friday night

The worst of the storm that drenched Southern California appeared to have passed by Saturday evening, as authorities continue the search for a 5-year-old girl who was swept into the Pacific Ocean by large waves

CHARLOTTE, N.C. — Federal agents started making arrests Saturday as Border Patrol deployments began in the city, a shift the Department of Homeland Security said was intended to “ensure Americans are safe and public safety threats are removed.”Earlier in the day, local officials sought to reassure residents as the looming operations created anxiety across the region, emphasizing that the Charlotte-Mecklenburg Police Department does not participate in federal immigration enforcement and urging the community to remain peaceful.

An Arctic blast is expected to bring icy conditions to two-thirds of the nation from Monday and bring record cold to the South

A man donned what appeared to be a full Nazi uniform and assaulted a female University of Georgia student outside an off-campus bar, the school said Sunday

The FBI is investigating the Michigan attack “as an act of targeted violence,” said Reuben Coleman, the acting special agent in charge of the FBI's Detroit field office.

Follow live updates on Charlie Kirk's memorial service at State Farm Stadium in Glendale, Arizona. Trump, Vance and Kirk's wife Erika are expected to honor the late conservative figure.