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In Britain, amid growing evidence of harm to young people from extreme content online, a “Smartphone Free Childhood” campaign is going viral.

The start-up’s valuation, which has nearly doubled in six months, shows continued enthusiasm for A.I. among investors.

Eric Trump and Donald Trump Jr. are investing in a Bitcoin-mining company called American Bitcoin, created by the merger of two firms.

The company, which uses artificial intelligence to develop new treatments, now counts the venture capital firm Thrive Capital as a backer.

The Swedish retailer H&M said it was exploring the use of artificial intelligence in producing “digital twins” of models.

The private equity giant is considering investing as the video app works to follow a law that requires it to separate from its Chinese owner, ByteDance, by next week.

The deal combined two of Mr. Musk’s companies, which have been on different trajectories. The transaction valued xAI at $80 billion and X at $33 billion, the billionaire said.

The chairman, Brendan Carr, sent a letter to the company accusing it of violating equal employment opportunity regulations.

The start-up, which provides the processing power to help develop A.I. systems, faces questions about its debt and the overall economy.

President Trump’s intervention came while Mr. Milton was appealing his conviction on securities and wire fraud charges.

Carmakers are likely to face higher costs regardless of how they respond to President Trump’s 25 percent tariffs on cars and auto parts.

The company, which originally expected its shares to be priced between $47 and $55, will ask for $40 a share in a sign of stock market uncertainty.

An update to ChatGPT made it easy to simulate Hayao Miyazaki’s style of animation, which has flooded social media with memes.

Rebecca Kelly Slaughter and Alvaro Bedoya, who were fired from the agency this month, accused President Trump in a lawsuit of executive overreach.

A new Friends Tab will feature posts from a user’s friends and relatives, which was the original mission of the app.

Companies like OpenAI and China’s DeepSeek offer chatbots designed to take their time with an answer. Here’s how they work.

With a national ban increasingly unlikely, let’s reflect on how the app both sparks joy among users and raises mental health concerns.

A journalist’s inclusion in a national security discussion served as a reminder that you might not know every number in the chat — and that could be a big problem.

The app, which was introduced in 2014 and has hundreds of millions of users, is widely viewed as the safest messaging tool because of its encryption technology.

Nvidia showcased robots that could work in warehouses, pedal around like “Star Wars” droids and manipulate surgical equipment at its weeklong A.I. conference

The popular video app, which could be banned in the United States next month if it is not sold to a non-Chinese owner, is portraying itself as a savior of Americans and a champion of small businesses in a new campaign.

World Liberty Financial, the crypto business created by President Trump and his sons, unveiled a cryptocurrency called a stablecoin, furthering his ties to an industry his administration regulates.

After the president made A.I. dominance a top priority, tech companies changed course from a meeker approach under the Biden administration.

Paleontologists hope that an amber-like material, made with living tree resin, will shed light on the prehistoric fossilization of the real stuff.

The Netflix co-founder said he wanted his alma mater to become a leader in studying the consequences, and guiding beneficial uses, of artificial intelligence.

A specious theory on pardons had help from the conservative Heritage Foundation before President Trump and right-wing influencers amplified it.

Firefly Aerospace’s successful moon lander has yielded a trove of data that scientists will pore over for years.

That control is starting to fray as Mr. Johnson, a longevity guru known for performing experiments on his body, faces a backlash over the agreements.

Steve Davis, a longtime Musk loyalist, is effectively the leader of the Department of Government Efficiency. Mr. Musk has likened him to chemotherapy.

European Union regulators said the tech giants likely violated the law by unfairly boxing out smaller competitors, adding to tensions between Europe and the United States.

The move is a bet that Ampere’s chips can begin playing a significant role in data centers for creating artificial intelligence.

The decision to fire the two members of the traditionally independent regulatory body is likely to face a legal challenge.

The Snoo. The Nanit. The Hatch Rest. Many lists of baby gear mandate certain items, but our columnist wondered if it would be better to chuck those lists out.

The online forum’s pseudonymity lets them vent, share information and find solace. Unpaid moderators, like David Carson, are working overtime to keep up.

Top congressional aides met with Oracle on Tuesday to talk about TikTok, which faces a ban in the United States unless it is sold to a non-Chinese owner by early April.

President Trump rallied support for Elon Musk’s car company, but there may not be enough conservatives willing to buy electric cars to make up for the Democrats who now shun Teslas.

Trump administration officials said the company donated the internet service, saying the gift had been vetted by the lawyer overseeing ethics issues in the White House Counsel’s Office.

The giant chipmaker has transformed its annual developer conference from an academic event into a who’s who gathering for the future of artificial intelligence.

The acquisition could make the Silicon Valley giant a bigger force in cybersecurity, and arrives months after an earlier round of talks collapsed.

You could call Facebook Marketplace a digital thrift shop. But that underplays how unique and bizarre the platform is.

CoreWeave, which provides computing power for A.I., was founded by three Bitcoin enthusiasts. The company is now set to make the first prominent A.I. initial public offering.

The post falsely claimed that Joseph Stalin, Adolf Hitler and Mao Zedong were not responsible for the murders of millions of people, but rather public sector workers were.

Mr. Lundstrom was a supporter of far-right causes and, at one point, an unsuccessful candidate for office. He was convicted of aiding copyright infringement in 2009.

She was so prolific — reimagining things as varied as toys, typewriters, umbrellas and ice-cream makers — that she earned the nickname Lady Edison.

Three arguments for taking progress toward artificial general intelligence, or A.G.I., more seriously — whether you’re an optimist or a pessimist.