Flashback Friday: Here's a list of what's currently living in your belly button.

Have you ever wondered what exactly is inside your belly button? Well, besides the lint (which is mostly derived from actual lint), there is a whole ecosystem of microorganisms that call the navel their home. The authors of this study used DNA sequencing to identify these organisms, determining that the belly button microbiome is dominated by a few common members (see excerpt below), but the remaining species are diverse. The most surprising result, however, was the discovery of two differen