Take a look at Nat Geo's 2025 Pictures of the Year, from wildlife portraits to groundbreaking scientific discoveries.

Decades ago, India’s tigers were on the brink of extinction. Slowly, their numbers have rebounded. But that ecological success has prompted a dire problem—and a race to save many of them from genetic ...

Scientists have taught bacteria to make octopus camouflage pigment, ushering in a new era of bio-inspired materials.

Picture an animal that huddles up with others when stressed, babysits its young, hangs out around relatives, and gathers in big groups every year. Did you imagine a rattlesnake? For a long time, ...

The results revealed a wide array of fossil egg colors and speckle patterns. Deinonychus and troodontid eggs were blue-green, ...