Federal projects are rolling out A.I. agents that offer therapy and prescribe medicine, raising concerns about safety and the influence of venture capital investors.

A call to slow the development of artificial intelligence has rattled markets and drawn pushback in Washington and Beijing. Others worry it may not be enough.

Senator Dan Sullivan of Alaska has shown quiet support for President Trump’s tariffs. His brother, the head of their family business, has described the economic volatility as an enormous challenge.

An agreement to turn an ailing Volkswagen factory into a defense manufacturing hub offers hope for jobs. But a shift from “family vans to tanks” in Germany is not so simple.

In a new memoir, the man behind Shake Shack and a suite of influential restaurants revisits the business blunders that taught him valuable lessons.

Current chatbots aren’t likely to help lone actors invent a deadly pathogen, experts say. But newer models, trained in biology, may need stronger safeguards.

Companies at the forefront of artificial intelligence in Asia, Europe and the United States posted declines after tech leaders expressed worries about the safety of “frontier” A.I. technology.

Oil prices jumped and stock futures fell slightly on concerns that energy supplies from the Persian Gulf would be further diminished by a drone attack on a critical pipeline in Saudi Arabia.