In the ocean's twilight zone, where the reach of the Sun fades to nothing, an epic migration begins every time night falls. It could also have an outsized effect on our climate.

On June 29, Gracie the Giraffe returned to her South Texas ranch after a 17-day walkabout and attendant media sensation. ...

From towering red deer to elusive basking sharks and ocean giants like humpback and sperm whales, the UK is home to some ...

Illegal mining in Peru is threatening water sources, ecosystems and one of the world's most important archeological sites, ...

Wildlife need connectivity to find food, mates, and shelter but roads and infrastructure can lead to fatal clashes. Crossings ...

Smaller than a domestic cat, there are two species of wild cat that could be considered the world’s smallest cat. Meet these ...

For Cuban zookeeper Ángel Cordero, the sight of four Bengal tiger cubs playing in a cage at the Cuban National ​Zoo is a small miracle on an island stifled by shortages of ‌fuel, medicine and ...

Pygmy falcons were once too small to be tracked via GPS. New technology has changed this, providing insight into the raptors' ...

Some harlequin frogs have lost their poison—and their ability to defend themselves. Scientists are on the case.

The New World screwworm, which was found in the United States in June for the first time in decades, often chooses livestock ...

Somewhere between your morning coffee and your evening news, there’s a place in Attalla, Alabama where a lion might roar so ...

With their killer instinct and feline prowess, the big-cat family represents some of the world's most impressive animals. All ...