This Ecuadorian frog was lost for 100 years—until now. Scientists believe this rediscovery will be vital to protect the country's most degraded ecosystem, the southern Andes mountains.

A colorized computed tomography (CT) scan of the brain revealing blood vessels in the brain. A new study finds microplastics accumulate at higher levels in human brains than in the liver and kidneys.

National Geographic stories take you on a journey that’s always enlightening, often surprising, and unfailingly fascinating. This month—the year in pictures ...