The joy of teaching soil science

a University of Wisconsin–Madison, Department of Soil Science, FD Hole Soils Lab, 1525 Observatory Drive, Madison 53706 WI, USA b University of Waikato, Department of Earth and Ocean Sciences, Private Bag 3105, Hamilton 3240, New Zealand c National Taiwan University, Department of Agricultural Chemistry, Taipei 10617, Taiwan d The Pennsylvania State University, Department of Ecosystem Science and Management, 452 ASI Building, University Park, PA 16802-3504, USA e The University of Sydney, Department of Environmental Sciences, Faculty of Agriculture and Environment, 1 Central Avenue, The Australian Technology Park, NSW, Australia f Lomonosov Moscow State University, Eurasian Center for Food Security, Leninskie Gory 1, 119991 Moscow, Russia g University of Maryland, Dept. of Environmental Science & Technology, H.J. Patterson Hall, College Park, MD 20742-5821, USA h University of Saskatchewan, Department of Soil Science, 51 Campus Dr. Saskatoon, SK S7N5A8, Canada i Lehrstuhl für Bodenkunde, Technische Universität München, D-85350 Freising-Weihenstephan, Germany j Wageningen University, Soil Geography and Landscape Group, PO Box 47, 6700 AA Wageningen, The Netherlands k Agrocampus Ouest, UMR 1069 SAS— Equipe MO-SOL, 65 rue de St Brieuc — CS 84215, F-35042 Rennes Cedex, France