Modern smartphones rolled out in 2007, the year that fertility rates began falling. Two studies say that is not a coincidence.

The British Film Institute assembled the memes in an archive of culturally significant internet moments. See what made the cut.

Internal documents show how tech giants grabbed children’s attention throughout the day, a strategy that schools say has undermined education.

The $135 share price means Elon Musk’s rocket maker is poised to exceed the 2019 initial public offering of Saudi Aramco in both valuation and money raised.

The 27-nation European Union outlined how it hopes to expand the region’s data centers, semiconductors and cloud computing capabilities.

The order, which signaled a shift from the hands-off approach the White House had previously taken toward A.I., followed debates over how to gain control of A.I. models without disrupting innovation.

The Bundibugyo virus, a little known type, previously had caused just two small outbreaks. Now it’s at the center of a rapidly widening epidemic in Africa.

An analysis of six years of procurement records suggests that the People’s Liberation Army has openly tried to acquire restricted U.S. technology.

The artificial intelligence company, which is racing OpenAI to the stock market, has seen explosive growth over the last year thanks largely to technology that can automatically write computer code.

New research examines how a Chinese company struggled to develop its predictive surveillance technology while U.S. restrictions were in place.

Anthropic raised $65 billion in new fund-raising that put its value at $900 billion, ahead of OpenAI’s last valuation of $730 billion, as the companies duel for A.I. dominance.

The billionaire’s new roots in Argentina are said to be partly motivated by concerns about the future of the United States and shared beliefs with Argentina’s right-wing leader.

The biggest episodes of the past have altered the course of human events, according to researchers. An emerging one is drawing historic comparisons.

© Dea/Biblioteca Ambrosiana, via Getty Images

The dream of clean hydrogen has tantalized energy experts for years, but producing it has been tough. Many start-ups think the answer could lie beneath our feet.

A House transportation bill introduced this week would require owners of electric cars to pay $130 to cover the cost of road repairs.

© Maddie McGarvey for The New York Times