The Nobel Committee honored Francis Halzen for his “vision and scientific leadership” of a telescope within the ice at the South Pole.

Karl Deisseroth, Peter Hegemann and Georg Nagel were recognized for their work on light-gated ion channels and optogenetics, a technique that uses pulses of light to activate neurons in the brain.

An appellate court in Arizona threw out the prison sentence of a man convicted of manslaughter after an A.I.-generated video of his victim was played in court.

The United States wants a reactor on the moon by 2030. A Russian-Chinese alliance is working on one for 2036. Some leading scientists say the danger is great.

This is ‘what authoritarian governments do to promote their leaders.’

Salata Dressings initiated the recall of its Jalapeño Avocado Dressing in August over concerns about possible salmonella contamination.

Forecasters say a dangerous heat wave is descending across much of Southern California, which is likely to bring triple-digit temperatures.

The ruling dealt a setback to the Trump administration’s plans for hundreds of miles of barriers that have drawn local opposition.

The government-funded ads show just how much President Trump has been able to use federal money for his own aims.

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The haunting documentary, by Yuval Abraham and Rachel Szor, interviews anonymous Israeli intelligence officers and soldiers as they recount their military actions in Gaza.

Gov. Bill Lee, a Republican, ordered a review of the state’s lethal injection process after the botched attempt to put Christa Pike to death. She was hospitalized Wednesday.

On the technological, diplomatic and biological fronts, Trump is creating a disaster.

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Plastics riddled with high-risk chemicals are in clothes, food, toys and common household items, a new investigation revealed.

The Trump administration should build a stronger alliance with clean energy companies in spite of its culture war with them.

The longtime Democratic insider has emerged as a behind-the-scenes force in his party’s push to win back Congress. After that, he’ll think about the next presidential race.

The president said the deal was not “acceptable” and demurred on whether he would restart military strikes after the midterm elections.

The agency has lost its independence and nearly a third of its staff, as Health Secretary Robert F. Kennedy Jr. and associates have tightened control.

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“Taken together, these requirements are likely to present an unnecessary and undemocratic obstacle to voting for many transgender people,” National Center for LGBTQ+ Rights legal director Shannon Mint...

Critics of a citizenship database built by the Trump administration have raised alarms about privacy and improper voter purges.

The use of artificial intelligence by hospitals and health insurers is escalating their longstanding feud over paying for medical care.

Trump’s flailing presidency leaves Americans with the thinnest of hopes for this week’s summit: that he does not further damage the national interest.

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Crow-Armstrong has been putting the finishing touches on arguably the best individual season in the club’s long history.

A third party can’t fix our politics. But there’s another way.

The panelists expressed reservations about the evidence supporting Grail’s Galleri test, which is designed to detect cancers early.

The average rate on a 30-year mortgage in the United States jumped to 7.03 percent, putting pressure on housing affordability.

The new ban continues Mr. Trump’s attempt to prevent the free flow of information in American society.

Vice President JD Vance said the measure would save the government $2.2 billion.

“I Play Rocky” and “Being Heumann” were the runners-up for the People’s Choice Award, which can be predictive of best picture at the Oscars.

The president’s announcement on Sunday echoed his justification for the White House ballroom: that the project was necessary for national security.

I am a “heritage American,” too. How should that guide my life?

Liberal democracy is in worldwide retreat, including in its birthplace — the United States.

Letting A.I. patrol its own frontier is like asking Jesse James to patrol the Wild West.

Maintenance projects have been put off around the country and resources diverted to the president’s favored projects in Washington.

Here are the states that have sought to limit access to some of the most lethal firearms, as gun restrictions face new legal challenges.

It is now apparent that many Americans — probably enough Americans — are determined to live within the truth rather than the lie.

More patients want nonhormonal methods of birth control. Yet only one copper IUD is currently available in the United States.

Nearly 1,000 readers sent us their questions about artificial intelligence, its potential and its potential risks.

Missy Mazzoli, whose “Lincoln in the Bardo” opens at the Metropolitan Opera this fall, writes politically urgent, musically eclectic works for a new generation of operagoers.

Gov. Gavin Newsom ordered the state to develop recommendations on safety measures, including requiring companies to build a “kill switch,” amid mounting concerns.

An internal memo reinterprets the law so that only the intentional killing of animals, not collateral harm, is illegal.

With work that breathed the spirit of the 1960s, he became fabulously wealthy from licensing his paintings and posters in all their euphoric Day-Glo glory.

The package would be among the largest deliveries of U.S. munitions to Israel.

The film “NAZA” investigates the killing of Palestinians by Israeli forces in Gaza. Israel’s culture minister has suggested revoking the directors’ citizenship.

The president again rejected calls to try to regulate the industry, even as some of its leaders are speaking more openly about the risks of rapidly developing artificial intelligence.

City officials — and one determined mother — are working to stop the spread of cychlorphine, which is far more potent than fentanyl.