Scientists have achieved an unprecedented look into how the human immune system attacks a transplanted pig kidney, using ...

Exotic animals are intriguing for a variety of reasons, leading some people to covet them. But these wild creatures are not ...

In the shadows of Python Cave, Uganda, a leopard leaps from a guano mound—formed by bat excrement—and sinks its teeth into a ...

Hansen's Disease, more commonly known as leprosy, is a chronic disease that can lead to physical impairment. Today it exists ...