Here at DSN we give microbes a dedicated week at other blogs it is all microbes all the time. At the wonderfully titled Small Thing Considered, you should check out both Swimming by the Light of the Sun and Gifts From Above. The site has more credentials and awards than can fit on an office wall. It is the blog for the American Microbiology Society and the writing comes from Moselio Schaechter, distinguished professor and emeritus from Tufts.