Kevin Hiscock is Professor of Environmental Sciences at the School of Environmental Sciences, University of East Anglia. He completed a PhD at the University of Birmingham on the hydrochemistry of the Chalk aquifer in north Norfolk and have extended my research interests at UEA to include the application of stable isotope methods and dissolved gases in hydrogeological investigations. He has employed stable isotopes of water and noble gases to understand groundwater recharge and flow processes and have developed nitrogen isotope methods to demonstrate the sources and fate of nitrate in several aquifer systems, both in the UK and internationally. A special interest has been the evaluation of the production and consumption of nitrous oxide in groundwater and the contribution by aquifers of this greenhouse gas to the atmosphere. Allied to these studies, he is currently researching the impacts of land management practices and climate change on groundwater resources through the application of groundwater models and my involvement with the EU Watercost and UNESCO International Hydrological Programme GRAPHIC (Groundwater Resources Assessment under the Pressures from Humanity and Climate Change) projects.