Prof. H. Chris Greenwell is Professor of Geochemistry at Durham University, United Kingdom. Chris graduated with a PhD in Physical Chemistry from Cambridge University in 2004 and his research specialises in the structure and reactivity of mineral interfaces, with a particular focus on the uses and applications of layered minerals. Bringing together theoretical and experimental studies, Chris has worked with many industry partners and organisations to develop technologies using minerals. Since 2015, Chris has worked with government and industry partners in the UK to develop a low-cost and sustainable adsorbent material for cleaning up pollution from legacy metal mines. Using knowledge gained from this, and working with colleagues in Kazakhstan and Afghanistan, low cost filters are being developed for use by families and communities to remove bacteria and metals from drinking water.