Michael Goss is a soil scientist and worked for over 20 years in the UK (Letcombe Laboratory, Rothamsted Research and the James Hutton Research Institute), collaborating with colleagues in France, Germany, Portugal and Australia. In 1990 he joined University of Guelph, Canada, as Research Chair in Land Stewardship and is Professor Emeritus in the School of Environmental Sciences. Michael is an Honorary Member and Fellow of the British Society of Soil Science. He was Editor-in-Chief of ‘Soil Use and Management’ and part of the editorial team for 10 years until 2019. He has written over 175 academic papers, edited two books and co-written a University-level textbook (2 editions) on water in plant production and a book on the management of arbuscular mycorrhizas. Margaret Oliver was Reader in Spatial Analysis at the University of Reading until she retired, and then awarded a visiting professorship. She continued to teach university courses at Reading, and short geostatistics courses at other universities abroad. Margaret became Co-editor-in-Chief of Precision Agriculture in 2005 for six years, and was also an Associate Editor of Mathematical Geosciences. She was an Associate Editor for the European Journal of Soil Science before becoming Deputy Editor in 2011 for four years, and then Editor-in-Chief in 2015. Margaret is an Honorary Member of the British Society of Soil Science. She has written over 100 academic papers and has also made several contributions to books. She is co-author of three text books and has edited two books. Margaret`s research interests include the application of numerical and geostatistical methods to soil, other data and precision agriculture. She has an award named after her for young pedometricians.