Healthy soil and sustainable growing

["Amanda Peck" <ap615@hotmail.com>]

My understanding is that there are zillions of kinds of them, ranging from 
what helps to digest our food for us (thanks guys) to pretty lethal.   And 
in between may be the ones that make us mildly ill when we go to another 
part of the country.

Whole bunch of definitions here:

http://www.answers.com/topic/escherichia-coli