This essay collection explores key issues in parapsychological research, including mediumship; unexplained aerial phenomena; anomalous experiences relating to mental health; and developments in the Global Consciousness Project, which examines a form of transpersonal collective consciousness. Grounded in the latest theoretical and empirical insights, each chapter takes a critical approach to a controversial subject. Aimed at researchers as well as general readers, the volume challenges assumptions relating to parapsychology, refines critical questions, and highlights emerging directions for future research in the field.