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Sales of expensive battery-powered cars like the Ford F-150 Lightning have stalled, forcing automakers to slow production and offer more affordable vehicles.

At least one space launch has been put on hold, as satellite operators and rocket companies manage the effects of the current geomagnetic storm hitting Earth.

The robot, known as AIDOL, staggered onstage during a technology showcase in Moscow. Organizers blamed the mishap on calibration and lighting issues.

The contracts are the latest sign of how Europe is lagging the United States in the race to break China’s chokehold on rare earths.

Every four years at the Cybathlon, teams of researchers and technology “pilots” compete to see whose brain-computer interface holds the most promise.

Many business leaders are skipping the annual United Nations climate summit in Belém, Brazil, or are attending events in other cities.

The second flight of the orbital rocket from Jeff Bezos’s space company was halted by weather. The company may try again on Wednesday.

A leading German automotive supplier said it was again allowed to ship semiconductors that Beijing had barred for export.

People have been waiting for a robot to do their chores since they watched “The Jetsons.” Can the company behind NEO finally make it happen?

Seven complaints, filed on Thursday, claim the popular chatbot encouraged dangerous discussions and led to mental breakdowns.

Tesla shareholders approved a plan to grant Elon Musk shares worth nearly $1 trillion if he meets ambitious goals, including vastly expanding the company’s stock market valuation.

The A.I. company faced pushback after a top executive raised the idea of government aid, amid concerns that the A.I. industry is headed toward a dangerous bubble.

A blame game has played out on the internet and on television. President Trump has pulled out the stops.

Psychologists and technologists see them as the future of therapy. The Food and Drug Administration is exploring whether to regulate them as medical devices.

A.I. search tools, chatbots and social media are associated with lower cognitive performance, studies say. What to do?