Jonathan Hempel, USDA-NRCS, Lincoln, NE, Erika Micheli, Pater K.U. 1, Szent Istvan University, Godollo, Hungary, Phillip Owens, 915 W. State St., Purdue University, West Lafayette, IN, Micheal Golden, USDA-NRCS, Washington, DC, Pavel Krasilnikov, Vavilov Institute of Plant Industry, Mexico, DF, MEXICO, Peter Schad, Technische Universitaet Muenchen, Freising, Germany, Alfred Hartemink, ISRIC, Wageningen, NETHERLANDS, H. Curtis Monger, PO Box 30003 Dept. 3Q, New Mexico State University, Las Cruces, NM, Ganlin Zhang, Chinese Academy of Sciences, Nanjing, CHINA, Method Kilasara, Soil Science, Sokoine Univ of Agriculture, Morogoro, Tanzania, Luca Montanarella, Institute for Environmenta & Sustainability, European Commission, Ispra, ITALY and Sergey Goryachkin, Inst of Geography Russian Acad-Sci, Moscow, Russia