A geologist by training, Patrick Nunn is Professor of Geography at the University of the Sunshine Coast (Australia) and author of >360 peer-reviewed publications, many explaining how ‘myths and legends’ are more likely to be authentic culturally-filtered memories of life-changing events witnessed long ago by our ancestors. His book The Edge of Memory (2018) makes the case for this and shows that some such stories recall events that happened more than ten thousand years ago. His latest book, Worlds in Shadow (2021), focuses on ancient ‘stories’ about submerged lands throughout the world and asks whether these stories have lessons for us today.