Melbourne’s 50-pound celebrity chick is molting, revealing adult feathers beneath his iconic brown fluff. Here’s what to expect as he waddles into adulthood.

Leatherbacks are the largest turtles on Earth, growing up to seven feet long and exceeding 2,000 pounds. These reptilian relics are the only remaining representatives of a family of turtles that ...

Photos from this obsession earned him recognition early on in his career, including been named a National Geographic Young Explorer and the Youth Outdoor Photographer of the Year. Bertie's goal is ...

This story appears in the August 2016 issue of National Geographic ... protected animal on the planet. But many of these reserves are very small, populated by villagers, and cut up by roads ...