An organized “crime gang” besieged the coastal city of Criciúma early Tuesday, robbing several bank branches, according to a police official.

A surprise clutch of eggs has solved a century-old leaf insect mystery.

The dark winter ahead for the U.S.

New York City became the highest-profile example when Mayor de Blasio said elementary schools would reopen starting Dec. 7.

In 2020, destruction of the world’s largest rainforest rose 9.5 percent from a year earlier to about 4,280 square miles. That’s a little smaller than Connecticut.

For the 80,000 children who die of H.I.V. each year, drugs are often bitter or hard to swallow. Dolutegravir will soon come in a tasty dissolving tablet.

Lower case numbers around Thanksgiving may be misleading.

Four experts agreed that there will be an upward bump in cases linked to the holiday, but they had different estimates for when it would emerge.

Seven years ago, the judges behind France’s second-biggest literary prize honored a pedophile writer, Gabriel Matzneff. Now, they have turned to a little-known female writer from a small publisher.

The Iranian Defense Ministry on Monday held a funeral for Mohsen Fakhrizadeh, one of Iran’s top nuclear scientists who was assassinated last Friday. Officials promised to find and punish those responsible for his killing.