Rob Dunn of North Carolina State University has written a charming and fascinating piece on the microbes that inhabit our belly buttons. You can find it here on the Scientific American blog site (http://blogs.scientificamerican.com/guest-blog/2012/11/07/after-two-years-scientists-still-cant-solve-belly-button-mystery-continue-navel-gazing/). I strongly recommend it for the skill of his writing as well as the extremely interesting insights into the microbes in …