Michael Nahm studied zoology, botany, genetics and palaeontology, and earned his PhD with a dissertation on tree physiology. During the recent years, he initiated and coordinated national and international research projects in forestry science. In addition, he follows a second line of research by exploring frontiers of (human) biology and various aspects of psychical research. Main interests of Nahm include near-death experiences, other near-death phenomena, mediumship, unexplained riddles of evolution, and the history of psychical research. He thinks that by asking the right questions, nature offers a tremendous amount of neglected and seemingly unexplained riddles about life on every level of biological organization. Nahm published two books and numerous articles about various topics of psychical research. The website www.michaelnahm.com presents an overview on his fields of study and his publications.