> But for many years people have had jobs specifically trying to get microbes to do useful work for us. Well, you know, there's brewing and bread. I like beer.

> But for many years people have had jobs specifically trying to get microbes to do useful work for us. Well, you know, there's brewing and bread. I like beer. I like sauerkraut. I like bread. Insulin is handy. So is human growth hormone.