So here’s a couple of articles about bacteria:

1) A reexamination of some microfossils seem to be giant baceria not animals.

2) How do we power things when oil is too expensive? Use bacteria of course. An indepth look at one lab’s work.

3) This looks at the microfauna of the gut and seems to indicate the types of bacteria in your gut determines the intake of nutrients and by extention how fat you are.