by Elio — The Aci­dobac­te­ria are an off­spring of metage­nomics. Their ex­is­tence as a phy­lum was not known un­til 1997, when their ex­is­tence was first no­ticed us­ing 16S rRNA tech­niques. But these are no ob­scure odd­i­ties liv­ing in ex­treme en­vi­ron­ments. Look for them in soils where they are among the most abun­dant bac­te­ria, par­tic­u­larly…