Three people were killed and five others wounded Monday when a gunman opened fire on a university campus in the United States, before fleeing the scene, local police said.

Former U.S. ambassador to the United Nations Nikki Haley on Tuesday kicked off her campaign for the 2024 Republican presidential nomination, a tough challenge as her former boss Donald Trump holds a strong lead in a new Reuters/Ipsos poll

US authorities thus far haven't seen any indication or anything that points specifically to the idea that these three objects were part of the PRC's spy balloon program or that they were definitely involved in external intelligence collection efforts.

There is no longer a threat to campus. We believe there to be only one suspect in this incident

"Crews have been able to recover significant debris from the site, including all of the priority sensor and electronics pieces identified as well as large sections of the structure," the US military's Northern Command said in a statement

Washington strenuously denied Beijing's charges as "false" and insisted it was China alone that has surreptitiously flown spy balloons, as tensions ramped up between the two superpowers

President Joe Biden ordered a F-16 fighter to shoot down the latest object "out of abundance of caution," a senior administration official said

Former Brazilian president Jair Bolsonaro said late Saturday that he plans to return to Brazil “in the coming weeks” after arriving in the United States in December.

"Airspace is closed due to an object that could interfere with commercial air traffic -- the DOD will resume efforts to observe and ground the object in the morning," Montana lawmaker Matt Rosendale tweeted

Trudeau also said he had spoken with US President Joe Biden about the incident, a day after Biden ordered a shootdown of an unidentified flying object over sea ice near Deadhorse, Alaska

Long-term exposure to air pollution raises the risk of depression, according to a pair of new studies published in the JAMA network of scientific journals.

President Joe Biden and his Brazilian counterpart Luiz Inacio Lula da Silva said Friday at the White House that the two biggest countries in the Americas have successfully seen off attacks on their democracies and will now work together on fighting the climate crisis.

Half of Russia’s main battle tanks have likely been destroyed or captured by Ukraine, a senior US defense official has said.

President Joe Biden has told CNN that the shoot down a “high-altitude object” hovering over Alaska “was a success,” shortly after American national security officials disclosed that the commander-in-chief gave the US military approval to take the action.

President Joe Biden ordered the shootdown, which was announced from the White House.

A man was shot dead on Thursday a few blocks from the heart of New York’s Times Square tourist hub, which last year was made a gun-free zone, police said.

"It's not a major breach," Biden said. "I mean, look, it's totally … it's a violation of international law. It's our airspace. And once it comes into our space, we can do what we want with it."

Nasa’s Curiosity rover has found wave-rippled rocks -- evidence of an ancient lake -- in an area of the planet expected to be drier, the US space agency said.

US Deputy Secretary of State Wendy Sherman on Monday briefed nearly 150 foreign diplomats across 40 embassies, while in Beijing the US embassy gathered foreign diplomats on Monday and Tuesday to present US findings about the balloon.

US President Joe Biden delivered his second State of the Union address on Tuesday night, seeking to overcome pessimism in the country and concerns about his own leadership.