In this episode, I speak with an interdisciplinary group of researchers and practitioners whose work engages with the multiple connections between sand, cities and various forms of in/security. With contributors offering rich insights from Morocco, Brazil, Kenya, Ghana and the India-Nepal, this episode offers a comparative view of the many forms of social, ecological and political in/security manifesting at the intersection of sand extraction and urbanisation. Contributors in order of appearance: Abdelkader Abderrahmane, Halinishi Yusuf, Frank Müller, Saumya Pandey, Kofi Asare, and Katharina Hemmler.