1. Why do I even have a belly button? Your belly button, or navel – clinically, your umbilicus – is the permanent scar left from where your umbilical cord connected your circulatory system, when you ...

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(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 ...

This is an archived article and the information in the article may be outdated.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 ...