Belly buttons are most people's first scars, which form when doctors cut their umbilical cord after birth. Most innies are full of dozens of kinds of bacteria, fungi, and lint - especially if they're ...

Hairy bellies have more lint and other findings from the research on our navels Q: I’ve noticed stuff inside my bellybutton from time to time. What is it, and how often should I be cleaning it out? A: ...

Good thinking, Craig. Why waste this valuable resource? And why stop at lint? Think of the environmentally sensitive duds one might make from used dental floss, or the hair fished from bathtub drains.

Following is a transcript of the video. Near the turn of this century, scientist Georg Steinhauser had a problem. He was fascinated by the question: Why do some belly buttons collect more lint than ...