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For a new series, Times journalists are speaking with scientists whose research has ended as a result of policy changes by the Trump administration.

Data centers squander vast amounts of electricity, most of it as heat. The physical properties of diamond offer a potential solution, researchers say.

An ad campaign for a wearable A.I. companion has blanketed New York City, starting conversations and inspiring vandalism.

Elon Musk's electric car company said the new versions would start at around $37,000 and $40,000, prices that bring its cars closer to comparable gasoline vehicles.

The prize was awarded to John Clarke, Michel H. Devoret and John M. Martinis.

In an escalating cat-and-mouse game, job hunters are trying to fool A.I. into moving their applications to the top of the pile with embedded instructions.

The emergency order is the latest turn in a longstanding legal dispute between the tech giant and the creator of the popular game Fortnite.

In July, the billionaire's A.I. company introduced two sexually explicit chatbots, pushing a new version of intimacy.

The Justice Department and Google wrapped up a two-week hearing that could have a major effect on online advertising.

Weeks after a $100 billion agreement to use computer chips from Nvidia, OpenAI has signed a similar deal with a rival chipmaker.