More light at the day’s end comes at a price: much later winter sunrises across much of the U.S. Scientists have documented consequences for public health and the economy.

Some gun violence experts are skeptical. But the research raises questions of whether there’s a cause-and-effect relationship and if so, what’s behind it.

That is good news for patients, but officials fear it will make controlling the spread of the disease harder.

The car’s driver-assistance system was in use when the crash killed a woman on Friday, the police said.

Searing temperatures in Western Europe are drawing comparisons to 2003, when a deadly heat wave sparked a reckoning.

© Thibault Camus/Associated Press

Searing temperatures in Western Europe are drawing comparisons to 2003, when a deadly heat wave sparked a reckoning.

The driver told investigators he was using the vehicle’s automated-driver system when the vehicle left the roadway and crashed into a house in Harris County, Texas.

The oldest known cases, discovered among hunter-gatherers in Siberian graves, contradict the theory that the disease once was mild.

Remains of the man, Joseph Louis Serrao Jr., discovered in a remote area in Olympic National Park in 2000, were identified using forensic genealogy.

The claim that their loved ones’ deaths and disappearances are linked is almost certainly false — but the loss remains real.

Severe, hard-to-control blazes in densely populated areas like Los Angeles drove the year’s record losses.

Severe, hard-to-control blazes in densely populated areas like Los Angeles drove the year’s record losses.

© Loren Elliott for The New York Times

The babies were part of a vaccine trial for a respiratory virus in the 1960s and died shortly after. Their families said they had been unaware of the trial until recently.

The types of Ebola and hantavirus worrying officials are very different from the species identified decades ago, raising new questions about how to respond.