We finish our discussion on bacterial taxonomy, this time looking at new approaches of naming the multitudes of unnamed uncultured organisms and the controversial renaming of phyla. With guests Professor Phil Hugenholtz, Professor Iain Sutcliffe and Professor Mark Pallen. Selective bibliography: https://github.com/MicroBinfie/Micro Binfie.github.io/blob/45db8eb57d732176449073065dbdacc88a288fe9/assets/ Taxonomy_Selective_bibliography.pdf