The data centers used for work on artificial intelligence can cost tens of billions to build. Tech giants are finding ways to avoid being on the hook for some of those costs.

Heng Guan fled to the United States and released rare video evidence of China’s clampdown. His supporters say that sending him to Uganda puts him at risk.

He and his father, the director Rob Reiner, also worked together on a film that was loosely inspired by the son’s early life.

The police said on Monday that they expected to bring criminal charges against the surviving suspect, who is in a coma after being shot by the police.

As it tries to demonstrate its continuing ability to fight, Ukraine said it had used drones to inflict serious damage on a Russian Kilo-class submarine at a Black Sea port.

For ecologists, the Covid-19 pandemic has presented a remarkable natural experiment in what can happen to wild animals when humans stay home.

The U.S. Tech Force is aiming to hire about 1,000 top-level technical employees and supervisors to join federal agencies and work on projects related to artificial intelligence and modernization.

In her first public speech as head of MI6, Blaise Metreweli said Russia was attempting to export chaos to Europe through hybrid attacks and disinformation.

Video of Ahmed el Ahmed disarming one of the gunmen has gone viral, and officials around the world have hailed his bravery.

Lightspeed Venture Partners, a Silicon Valley venture firm, has amassed more than $9 billion to invest in artificial intelligence. That is its biggest haul.

After his son was repeatedly attacked, Rick Kuehner reached out to his suburban school, to the police and to other parents. The violence only got worse.

To mark the winter holidays — an especially popular time to break up — we asked people around the world for their most striking parting words to each other.