Rainer Horn is currently Professor for Soil Science (Chair) at Institute of Plant Nutrition and Soil Science, Christian Albrechts University zu Kiel, 24118 Kiel , Olshausenstr. 40 Germany. He works in the broad area of Soil Physics: soil mechanics: stress strain effects in structured soils, soil structure effects, chemical as well as hydraulic processes in structured soils, unsaturated 3 dimensional flow and transport processes, waste deposit management capping systems, soil tillage effects on soil properties, soil hydraulic properties, chemical and biological aspects of soil aggregates. He completed his doctorate with Professor Dr. K.H. Hartge at the University of Hannover in 1976 and his habilitation at the University of Berlin (Advisor Professor Dr. H.P. Blume) in 1981. 1982- 1987 he was Professor for Soil Science University Bayreuth; from 1988- 1998 Professor for Soil Science and Soil Protection (C3) Christian Albrechts University Kiel and since October 1998 Professor for Soil Science (Chair C4) at the Institute for Plant Nutrition and Science, Christian Albrechts University Kiel. He is a Honorary of Soil Science Society of Romania andRomanian Academy of agriculture and forestry science. In 2005 he was made a Fellow of the American Soil Science Society and in 2006 a Fellow of the American Society of Agronomy. He has actively collaborated with soil scientists around the world including : 1986/87, 2003:Visiting Research Scientist CSIRO, Australia; 2003 University of Queensland, Australia ; 1992, 98, 99, 2001, 2002,2003, 2004,2006: Visiting Research Scientist Academia Sinica, China; 1998: Visiting Research Scientist National Soil Dynamic Lab. Auburn, USA, 1994, 1995,1999, 2000 Instituto Sciencias do Suelos, Valdivia, Chile; 2004, 2005 University Santa Maria, Brasil. He has published more than 200 papers in reviewed journals, 58 bookchapters, and 12 books apart from more than 70 unreviewed papers and reports. For more details see our homepage: www.soils.uni-kiel.de