Dr Nico Goldscheider studied geology at the University of Karlsruhe, Germany and has been Senior Lecturer at the Centre of Hydrogeology at the University of Neuchatel, Switzerland since 2002. He is a specialist in karst hydrogeology, tracing techniques and groundwater quality monitoring, and has an interest in the microbiological aspects of karst hydrogeology. Dr David Drew studied at the Universities of Nottingham and Bristol, UK. He is currently Senior Lecturer in Geography at Trinity College Dublin. His particular research interests include the hydrogeology of karstic areas and human interaction with the karstic environment.