Macaques, reeling from a hurricane, learned by necessity to get along, a study found. It’s one of the first to suggest that animals can adapt to environmental upheaval with social changes.

© Ramon Espinosa/Associated Press

The National Institutes of Health, which owns the chimps at the Alamogordo Primate Facility in New Mexico, has no plans to move the animals to sanctuary, despite a ruling from a federal judge.

© Emil Lippe for The New York Times

For the first time, scientists observed a primate in the wild treating a wound with a plant that has medicinal properties.