At three colleges, there were snacks, big screens and homework assignments. But energy and enthusiasm were sparse — and by the end, even more so.

The A.I. start-up’s valuation has risen by more than $70 billion in nine months.

Iran’s second missile barrage against Israel is unlikely to deter its foe, experts say, but may help retain the support of the “Axis of Resistance” it has built up over years.

Our columnists and contributors rate Tim Walz’s and JD Vance’s debate performances.

The medication, called cytisine, is already used elsewhere in the world. There are efforts to bring it to the U.S.

The main questions now are how much the conflict will escalate and whether the United States will get more directly involved in the defense of Israel.

President Vladimir Putin is throwing ever more resources at two interlocked priorities: recruiting more soldiers and encouraging bigger families.

They control Republican politics in the state. Now they’re poised to take their theocratic agenda nationwide.

Vuhledar had been under assault for almost three years. Russian forces entered it after a furious battle, and Ukraine ordered troops to retreat.

Research on hundreds of tropical storms finds that mortality keeps rising for more than a decade afterward, for reasons you might not expect.

The strike by longshoremen has halted commerce at Newark and other ports on the East and Gulf Coasts, affecting an ecosystem of supply-chain workers.

JD Vance sailed fairly smoothly through some 90 minutes of Tuesday’s debate with Tim Walz. Then the subject turned to the Jan. 6, 2021, attack on the Capitol.

Louis Vuitton, Chanel and Miu Miu bring Paris Fashion Week to a close with some important takeaways.

Curtis Bashaw, a Republican hotel owner, is running a long-shot campaign to represent New Jersey in the Senate against Andy Kim, a Democratic congressman.

A night of few fireworks between the candidates was also a night of little sartorial flair. And that was the goal.

The exodus of the young means high-risk towns could enter a population death spiral.

At its annual convention in Birmingham, the party is energized by a leadership contest and seems largely undisturbed by broader questions over its electability.

Foreign Minister Israel Katz said the United Nations secretary general had not condemned Iran’s missile attack on Israel in strong enough terms.

We explain the why the debate offered a snapshot of another era.

We explain the why the debate offered a snapshot of another era.