“If none of the existing definitions of ‘life’ please you, then why don’t you find one yourself?” While not verbatim, this was the challenge presented by an undergraduate student to Arnold de Loof while he was teaching zoology at the University of Leuven in the 1970s. So began his years of searching for a suitable answer, during which he discovered a flaw central to many definitions: they compared living things to non-living things, rather than examining what changes when something goes from being alive to no longer living. So what changes at the moment of death? Tune in to find out. De Loof has authored several papers, many of which can be found on ResearchGate and Pubmed. He has also written two books, What is Life: The Immaterial Dimension, and Communication, Life, Mega-Evolution: Decrypting Life’s Nature.