About the Guest Editor

**Paul L. Younger** holds the Rankine Chair of Energy Engineering at the University of Glasgow, and is Professor of Energy Engineering. His geothermal energy research portfolio ranges from heat-pump applications in shallow aquifers and flooded mineworkings, through novel approaches to combined heat and power developments using mid-enthalpy reservoirs, to holistic analyses of unorthodox high-enthalpy systems in Eastern Africa. Younger has a long track record of collaborative working at all levels from global boardrooms to impoverished villages in the Global South, and

he was previously Pro-Vice-Chancellor for Engagement at Newcastle University, where his community-based research won the Queen's Anniversary Prize for Higher Education in 2005. He was elected a Fellow of the Royal Academy of Engineering in 2007, and holds honorary doctorates from leading universities in Spain and Peru. Younger is a founder-Director of Hotspur Geothermal, a London-based company active in the UK and Africa. He has more than 400 publications to his credit.
