Alexander Moreira-Almeida, MD, is Professor of Psychiatry at the Universidade Federal de Juiz de Fora (UFJF) in Brazil. He is the coauthor of the book, "Science of Life After Death". Here he identifies the primary scientific objection to postmortem survival as physicalism, the metaphysical notion that nature is entirely based on matter. He points out that this common notion within academia is not a requirement of science. In fact, it has long been disputed within philosophy, going back to Plato, and is not accepted by many Brazilian psychiatrists and academics. He describes research with Brazilian medium, Chico Xavier as well as research on reincarnation and near-death experiences.