(The Conversation) – Everyone has one, but you might not know much about it. Here biologist Sarah Leupen, who teaches human and comparative animal physiology, explains the ins and outs of belly ...

When it comes to body parts, the belly button doesn’t usually get much attention. Yet this often-overlooked little spot is a treasure trove of interesting details. Whether you've got an innie or an ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (The Conversation) – Everyone has one, but ...