In a long-awaited decision, a federal judge said Google must change its ad tech business to address antitrust issues, but did not disclose the measures.

The department argued in a court filing that OpenAI legally used articles by The New York Times to develop A.I., adding that national security depended on American tech dominance.

The layoffs affect about 3,300 workers, as Chief Executive Dara Khosrowshahi bets on a “leaner organization.”

In times of natural disasters and other dangers, special features tucked away on your iPhone or Android device could help make a difference.

The public housing authority in Concord, N.H., installed monitoring devices in 300 homes. Tenants are now suing to remove the Minut sensors.