Dr. Eric Lichtfouse is Editor of scholarly journals and series in environmental chemistry and agriculture. He is heading publication assistance services and teaching scientific writing in Europe and the USA. He has done research in organic geochemistry, soil carbon dynamics and phytoremediation. Dr. Jan Schwarzbauer is Editor of the journal 'Environmental Earth Sciences ' and Subject Editor of 'Journal of Soils and Sediments'. After studying chemistry at the University of Hamburg, he is working since 1998 at the RWTH Aachen University leading as full professor the group 'Enviromental Organic Geochemistry'. Dr. Didier Robert is professor in organic chemistry and green chemistry at the University Paul Verlaine-Metz (France). He is associate editor of the Journal of Photocatalysis Sciences and its research activities are devoted to the decontamination of air and water by photochemical processes, especially by photocatalysis. He is also editor of the biannual magazine "UniversCity" published by UPV-Metz, dedicated to Cultures and Sciences.