Dr. rer. nat. Denis Pfister-Grune, Naturopath/Biologist, Braunsbedra OT RoBbach, Germany 1 Introduction1.1 Choice of topicWhen | was asked if | could give a presentation at our big congress, | quickly realized which topic | would choose. Together with my wife and our three children, we run an organic beekeeping business. With currently 40 bee colonies, […]