I Contain Multitudes: The Microbes Within Us and a Grander View of Life by Ed Yong Back in college, like any student, there were a plethora of classes I was forced to take that I didn’t really want to. One of those classes was microbiology. I was a bio major, but I thought microbiology meant looking at microscopes at more multicellular things. I was wrong. I also wasn’t a very good student, if that’s still not clear. It was a...