a quick introduction to bacteria
https://docs.google.com/document/d/1STAYUQZ-CkytPsV_CoSVzB9DBlQzHNuqEL73thwbI4Q/pub
WATCH JUST THE FIRST FOUR MINUTES (rest is optional!)
hereĀ http://www.ted.com/talks/bonnie_bassler_on_how_bacteria_communicate.html