Some of you might be interested in this FAQ I ran across on the American Society of Microbiology that is for non-scientists on the Microbiology of Beer.
If the yeast ain't happy, ain't nobody happy.
http://academy.asm.org/images/stories/documents/ColloquiaDoc/faq_beer.pdf
If the yeast ain't happy, ain't nobody happy.
http://academy.asm.org/images/stories/documents/ColloquiaDoc/faq_beer.pdf