Dr Manjula Ranagalage is working as a Senior Lecturer in Environmental Management, Department of Environmental Management, Faculty of Social Science and Humanities of Rajarata University of Sri Lanka, Mihintale, Sri Lanka. He joined the Department of Social Sciences in 2009 as a permanent lecturer. Before joining the department, he saved as an Assistant Lecturer in the Department of Geography, University of Colombo. Dr Ranagalage obtained his Bachelor of Arts degree with a Geography specialization and a First Class at the University of Colombo in 2006. Furthermore, he earned two master’s degrees in Geo-informatics and Geography at the Postgraduate Institute of Agriculture, the University of Peradeniya in 2010, and the University of Sri Jayewardenepura 2013, respectively. He has completed a PhD in Geo-Environmental Sciences in the Graduate School of Life and Environmental Sciences of the University of Tsukuba, Japan, in April 2019. Dr Ranagalage has published more than 45 journal articles published including some in SCI, SSCI, ESCI journals and other peer-reviewed journals, more than 50 conference publications, and more than ten books. His research disciplines are included GIS & Remote Sensing, GIScience, Geospatial Analysis, Urban Geography, Land change science, Urban Studies, Urban Sustainability, Urban Heat Island, Spatial Analysis, urban green volume and build-up volume, disaster management.